Update changelog

CHANGELOG.md

@@ -6,13 +6,13 @@
 
 * Added option to update books by percentage completed rather than timed updates
 * Display error and disable some functionality when Hardcover API indicates that API key is not valid, in preparation
-  for upcoming API key reset
+  for [upcoming API key reset](https://github.com/Billiam/hardcoverapp.koplugin/issues/6)
 
 ### 🩹 Fixes
 
 * Fix crash when linking book from hardcover menu
 * Fix automatic book linking not working unless track progress (or always track progress) already set
-* Fix automatic book linking not working for hardcover identifiers
+* Fix manual and automatic book linking not working for hardcover identifiers
 * Fix failure to mark book as read when end of book action displays a dialog
 * Fix a crash when searching without an internet connection
 * Fix page update tracking not working correctly when using "always track progress" setting