Fix&update some broken links (#36505)

* fix&update broken links

* Apply suggestions from code review

---------

Co-authored-by: Joshua Chen <sidachen2003@gmail.com>

files/en-us/mozilla/firefox/releases/48/index.md

@@ -60,7 +60,7 @@ page-type: firefox-release-notes
 
 - The `text` value of {{cssxref("background-clip")}} is now available in all type of Firefox (and not only non-release builds) ([Firefox bug 1263516](https://bugzil.la/1263516)).
 - The `absolute` value of {{cssxref("position")}} properties on the top layer element ([Firefox bug 1236828](https://bugzil.la/1236828)).
-- Added an internal-only syntax for {{domxref("@supports")}} to detect pref ([Firefox bug 1259889](https://bugzil.la/1259889)).
+- Added an internal-only syntax for {{cssxref("@supports")}} to detect pref ([Firefox bug 1259889](https://bugzil.la/1259889)).
 
 ### JavaScript
 

files/en-us/mozilla/firefox/releases/51/index.md

@@ -94,7 +94,7 @@ Firefox 51 was released on January 24, 2017. This article lists key changes that
 - Scripts served with an `image/*`, `video/*`, `audio/*` or `text/csv` MIME type are now blocked and are not loaded or executed. This happen when they are declared using {{HTMLElement("script")}}, or loaded via {{domxref("WorkerGlobalScope.importScripts()")}}, {{domxref("Worker.Worker","Worker()")}}, {{domxref("SharedWorker.SharedWorker", "SharedWorker()")}} ([Firefox bug 1229267](https://bugzil.la/1229267) and [Firefox bug 1288361](https://bugzil.la/1288361)).
 - Support for SHA-1 certificates from publicly-trusted certificate authorities has been removed ([Firefox bug 1302140](https://bugzil.la/1302140)). See also [Phasing Out SHA-1 on the Public Web](https://blog.mozilla.org/security/2016/10/18/phasing-out-sha-1-on-the-public-web/) for more information.
 - New WoSign and StartCom certificates will no longer be accepted ([Firefox bug 1309707](https://bugzil.la/1309707)), see [Distrusting New WoSign and StartCom Certificates](https://blog.mozilla.org/security/2016/10/24/distrusting-new-wosign-and-startcom-certificates/) for more information.
-- The [PAC](</en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file>) `FindProxyForURL(url, host)` function now strips paths and queries from https\:// URLs to avoid information leakage (see [Firefox bug 1255474](https://bugzil.la/1255474) and [CVE-2017-5384](https://nvd.nist.gov/vuln/detail/CVE-2017-5384)).
+- The [PAC](/en-US/docs/Web/HTTP/Proxy_servers_and_tunneling/Proxy_Auto-Configuration_PAC_file) `FindProxyForURL(url, host)` function now strips paths and queries from https\:// URLs to avoid information leakage (see [Firefox bug 1255474](https://bugzil.la/1255474) and [CVE-2017-5384](https://nvd.nist.gov/vuln/detail/CVE-2017-5384)).
 
 ### XHR
 
@@ -135,8 +135,8 @@ Firefox 51 was released on January 24, 2017. This article lists key changes that
 
 ### Removals
 
-- The non-standard [Simple Push API](/en-US/docs/Archive/Firefox_OS/API/Simple_Push_API), mainly intended for use with Firefox OS and now superseded by the [W3C Push API](/en-US/docs/Web/API/Push_API), has been completely removed from Gecko ([Firefox bug 1296579](https://bugzil.la/1296579)).
-- The non-standard [Alarms API](/en-US/docs/Archive/Firefox_OS/API/Alarm_API), mainly intended for use with Firefox OS, has been completely removed from Gecko ([Firefox bug 1300884](https://bugzil.la/1300884)).
+- The non-standard Simple Push API, mainly intended for use with Firefox OS and now superseded by the [W3C Push API](/en-US/docs/Web/API/Push_API), has been completely removed from Gecko ([Firefox bug 1296579](https://bugzil.la/1296579)).
+- The non-standard Alarms API, mainly intended for use with Firefox OS, has been completely removed from Gecko ([Firefox bug 1300884](https://bugzil.la/1300884)).
 - Support for prefixes in the [Page Visibility API](/en-US/docs/Web/API/Page_Visibility_API) has been removed ([Firefox bug 812701](https://bugzil.la/812701)).
 
 ## Changes for add-on and Mozilla developers
@@ -161,15 +161,15 @@ Firefox 51 was released on January 24, 2017. This article lists key changes that
 ### Other
 
 - The [`multiprocessCompatible` property of `install.rdf`](/en-US/docs/Mozilla/Add-ons/Install_Manifests#multiprocesscompatible) must now be explicitly set to `false` to prevent multiprocess from being enabled in Firefox when the add-on is installed.
-- The Mozilla-specific [Social API](/en-US/docs/Mozilla/Projects/Social_API) has been substantially changed (largely to remove APIs no longer used), as follows:
+- The Mozilla-specific Social API has been substantially changed (largely to remove APIs no longer used), as follows:
 
-  - The {{domxref("MozSocial")}} interface and the {{domxref("navigator.mozSocial")}} property which supports it have been removed.
-  - The [Social Bookmarks API](/en-US/docs/Mozilla/Projects/Social_API/Bookmarks) has been removed.
+  - The `MozSocial` interface and the `Navigator.mozSocial` property which supports it have been removed.
+  - The Social Bookmarks API has been removed.
   - The Social chat functionality has been removed.
   - The Social Status API has been removed.
-  - All of the [social widgets](/en-US/docs/Mozilla/Projects/Social_API/Widgets), except for the Share panel, have been removed. This includes the social sidebar, flyover panels, and so forth.
+  - All of the social widgets, except for the Share panel, have been removed. This includes the social sidebar, flyover panels, and so forth.
   - All supporting user interface features and functionality for the removed APIs have been removed as well.
-  - [Social service provider manifest](/en-US/docs/Mozilla/Projects/Social_API/Manifest) properties supporting the removed functionality are no longer supported.
+  - Social service provider manifest properties supporting the removed functionality are no longer supported.
 
 - If an add-on uses `mimeTypes.rdf` to provide a file extension to MIME type mapping, it must now register an entry in the `"ext-to-type-mapping"` category ([Firefox bug 306471](https://bugzil.la/306471)).
 - The [Browser API](/en-US/docs/Mozilla/Gecko/Chrome/API/Browser_API) now includes a `detail` object on the event object of the [`mozbrowserlocationchange`](/en-US/docs/Web/Events/mozbrowserlocationchange) event that contains `canGoForward`/`canGoBack` properties, allowing retrieval of the mozBrowser's back/forward status synchronously ([Firefox bug 1279635](https://bugzil.la/1279635)).

files/en-us/mozilla/firefox/releases/56/index.md

@@ -51,7 +51,7 @@ _No changes._
 
 #### DOM events
 
-- {{domxref("HTMLElement/wheel_event", "onwheel")}} is now available on {{domxref("HTMLElement")}} — it wasn't before ([Firefox bug 1370550](https://bugzil.la/1370550)).
+- {{domxref("Element/wheel_event", "onwheel")}} is now available on {{domxref("HTMLElement")}} — it wasn't before ([Firefox bug 1370550](https://bugzil.la/1370550)).
 
 #### Media and WebRTC
 
@@ -74,7 +74,7 @@ _No changes._
 ### Other
 
 - Gecko now encodes URLs internally as [punycode](https://en.wikipedia.org/wiki/Punycode), to avoid URL encoding problems (see [Firefox bug 945240](https://bugzil.la/945240), also see discussion in [Firefox bug 942074](https://bugzil.la/942074)).
-- Firefox on Windows and macOS can now be made to run in [headless mode](/en-US/docs/Mozilla/Firefox/Headless_mode) using the `-headless` flag (see [Firefox bug 1355150](https://bugzil.la/1355150) and [Firefox bug 1355147](https://bugzil.la/1355147)).
+- Firefox on Windows and macOS can now be made to run in headless mode using the `-headless` flag (see [Firefox bug 1355150](https://bugzil.la/1355150) and [Firefox bug 1355147](https://bugzil.la/1355147)).
 
 ## Removals from the web platform
 

files/en-us/mozilla/firefox/releases/57/index.md

@@ -59,9 +59,9 @@ _No changes._
 
 ### JavaScript
 
-- The non-standard [`for each...in`](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#statements_2) loop, originally part of EcmaScript for XML (E4X), has been removed. Please use {{JSxRef("Statements/for...of", "for...of")}} instead and see [Warning: JavaScript 1.6's for-each-in loops are deprecated](/en-US/docs/Web/JavaScript/Reference/Errors/For-each-in_loops_are_deprecated) for migration help. ([Firefox bug 1083470](https://bugzil.la/1083470)).
-- The {{JSxRef("Object.prototype.watch()")}} and {{JSxRef("Object.unwatch", "unwatch()")}} methods are deprecated, will now throw a warning when used, and will be removed soon ([Firefox bug 934669](https://bugzil.la/934669)).
-- The non-standard {{JSxRef("Iterator")}} and {{JSxRef("StopIteration")}} objects as well as the legacy iteration protocol have been removed ([Firefox bug 1098412](https://bugzil.la/1098412)).
+- The non-standard [`for each...in`](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#statements_2) loop, originally part of EcmaScript for XML (E4X), has been removed. Please use {{JSxRef("Statements/for...of", "for...of")}} instead. ([Firefox bug 1083470](https://bugzil.la/1083470)).
+- The [`Object.prototype.watch()` and `Object.prototype.unwatch()`](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#object_2) methods are deprecated, will now throw a warning when used, and will be removed soon ([Firefox bug 934669](https://bugzil.la/934669)).
+- The non-standard `Iterator` and `StopIteration` objects as well as the [legacy iteration protocol](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#legacy_generator_and_iterator) have been removed ([Firefox bug 1098412](https://bugzil.la/1098412)).
 - Async generator is now enabled ([Firefox bug 1352312](https://bugzil.la/1352312)).
 - for await (... of ...) syntax is now enabled ([Firefox bug 1352312](https://bugzil.la/1352312)).
 

files/en-us/mozilla/firefox/releases/58/index.md

@@ -90,7 +90,7 @@ _No changes._
 ### Other
 
 - "Add to home screen" is now supported in Firefox for Android, part of the [Progressive Web Apps](/en-US/docs/Web/Progressive_web_apps) effort ([Firefox bug 1212648](https://bugzil.la/1212648)).
-- [WebAssembly](/en-US/docs/WebAssembly) now has a tiered compiler providing load time optimizations ([Firefox bug 1277562](https://bugzil.la/1277562)), and new streaming APIs — [`WebAssembly.compileStreaming()`](/en-US/docs/WebAssembly/JavaScript_interface/compileStreaming_static) and [`WebAssembly.installStreaming()`](/en-US/docs/WebAssembly/JavaScript_interface/installStreaming) [Firefox bug 1347644](https://bugzil.la/1347644).
+- [WebAssembly](/en-US/docs/WebAssembly) now has a tiered compiler providing load time optimizations ([Firefox bug 1277562](https://bugzil.la/1277562)), and new streaming APIs — [`WebAssembly.compileStreaming()`](/en-US/docs/WebAssembly/JavaScript_interface/compileStreaming_static) and [`WebAssembly.instantiateStreaming()`](/en-US/docs/WebAssembly/JavaScript_interface/instantiatestreaming_static) [Firefox bug 1347644](https://bugzil.la/1347644).
 
 ## Removals from the web platform
 
@@ -139,8 +139,8 @@ _No changes._
 ### JavaScript
 
 - The non-standard [`Date.prototype.toLocaleFormat()`](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#date_2) method has been removed ([Firefox bug 818634](https://bugzil.la/818634)).
-- The non-standard and deprecated {{jsxref("Object.prototype.watch()")}} and {{jsxref("Object.prototype.unwatch", "unwatch()")}} methods have been removed and will no longer work ([Firefox bug 638054](https://bugzil.la/638054)). Consider using [setters and getters](/en-US/docs/Web/JavaScript/Guide/Working_with_objects#defining_getters_and_setters) or [proxies](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy) instead.
-- The [legacy Iterator protocol](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#legacy_generator_and_iterator), the [`StopIteration`](/en-US/docs/Archive/Web/StopIteration) object, the [legacy generator functions](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features) and the non-standard `Function.prototype.isGenerator()` method have been removed. Use the ES2015 [iteration protocols](/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) and standards-compliant [iterators and generators](/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators) instead ([Firefox bug 1083482](https://bugzil.la/1083482), [Firefox bug 1413867](https://bugzil.la/1413867), [Firefox bug 1119777](https://bugzil.la/1119777)).
+- The non-standard and deprecated [`Object.prototype.watch()` and `Object.prototype.unwatch()`](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#object_2) methods have been removed and will no longer work ([Firefox bug 638054](https://bugzil.la/638054)). Consider using [setters and getters](/en-US/docs/Web/JavaScript/Guide/Working_with_objects#defining_getters_and_setters) or [proxies](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy) instead.
+- The [legacy Iterator protocol](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features#legacy_generator_and_iterator), the `StopIteration` object, the [legacy generator functions](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features) and the non-standard `Function.prototype.isGenerator()` method have been removed. Use the ES2015 [iteration protocols](/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) and standards-compliant [iterators and generators](/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators) instead ([Firefox bug 1083482](https://bugzil.la/1083482), [Firefox bug 1413867](https://bugzil.la/1413867), [Firefox bug 1119777](https://bugzil.la/1119777)).
 - The non-standard [Array comprehensions](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features) and [Generator comprehensions](/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features) have been removed ([Firefox bug 1414340](https://bugzil.la/1414340)).
 
 ### APIs

files/en-us/mozilla/firefox/releases/59/index.md

@@ -122,7 +122,7 @@ The non-standard `version` parameter of the {{htmlelement("script")}} element's
 ### APIs
 
 - The non-standard method `Event.getPreventDefault()` has been removed. You should instead use the {{domxref("Event.defaultPrevented")}} property to determine whether or not {{domxref("Event.preventDefault", "preventDefault()")}} was called on the {{domxref("Event")}}.
-- The proprietary [`Navigator.mozNotification`](/en-US/docs/Archive/API/Navigator/mozNotification) property and `DesktopNotification` interface have been removed, in favor of the standard [Notifications API](/en-US/docs/Web/API/Notifications_API) ([Firefox bug 952453](https://bugzil.la/952453)).
+- The proprietary `Navigator.mozNotification` property and `DesktopNotification` interface have been removed, in favor of the standard [Notifications API](/en-US/docs/Web/API/Notifications_API) ([Firefox bug 952453](https://bugzil.la/952453)).
 - The proprietary `window.external.addSearchEngine()` method has been removed ([Firefox bug 862147](https://bugzil.la/862147)). Also see {{domxref("Window.external")}} for more details.
 - The non-standard Firefox-only {{domxref("HTMLMediaElement")}} property `mozAutoplayEnabled` has been removed.
 

files/en-us/mozilla/firefox/releases/62/index.md

@@ -75,7 +75,7 @@ _No changes._
 - The {{domxref("DOMPointReadOnly")}} interface now supports the static function {{domxref("DOMPointReadOnly.fromPoint_static", "DOMPointReadOnly.fromPoint()")}}, which creates a new point object from a dictionary that's compatible with `DOMPointInit`, which includes any {{domxref("DOMPoint")}} object. This function is also available on {{domxref("DOMPoint")}} ([Firefox bug 1186265](https://bugzil.la/1186265)).
 - For compatibility purposes, the {{domxref("Event.srcElement")}} property is now supported. It is an alias for {{domxref("Event.target")}} ([Firefox bug 453968](https://bugzil.la/453968)).
 - {{domxref("Navigator.registerProtocolHandler()")}} now must only be called from a secure context ([Firefox bug 1460506](https://bugzil.la/1460506)).
-- The {{domxref("Navigator.registerContentHandler()")}} method has been disabled by default in preparation for being removed entirely, as it's been obsolete for some time ([Firefox bug 1460481](https://bugzil.la/1460481)).
+- The `Navigator.registerContentHandler()` method has been disabled by default in preparation for being removed entirely, as it's been obsolete for some time ([Firefox bug 1460481](https://bugzil.la/1460481)).
 - The {{domxref("DataTransfer.DataTransfer", "DataTransfer()")}} constructor has been implemented ([Firefox bug 1351193](https://bugzil.la/1351193)).
 - {{domxref("Document.domain")}} can no longer return `null` ([Firefox bug 819475](https://bugzil.la/819475)). If the domain cannot be identified, then `domain` returns an empty string instead of `null`.
 - Added the {{domxref("console/timeLog_static", "console.timeLog()")}} method to display the current value of a console timer while continuing to track the time ([Firefox bug 1458466](https://bugzil.la/1458466)).