Fix the date on the Key Discovery Note ED (#159)

Author: mwatson2

keydiscovery/keydiscovery-respec.html

@@ -49,7 +49,7 @@
                                         mailto: "watsonm@netflix.com", 
                                         company: "Netflix", 
                                         companyURL: "http://www.netflix.com/"} ],
-                            publishDate: "2016-03-23",
+                            // publishDate: "2016-03-23",
                             previousPublishDate:  "2013-01-08",
                             // edEnd:  "",
                             previousMaturity: "WD",

keydiscovery/keydiscovery.html

@@ -692,7 +692,6 @@
         "company": "Netflix",
         "companyURL": "http://www.netflix.com/"
       }],
-      "publishDate": "2016-03-23",
       "previousPublishDate": "2013-01-08",
       "previousMaturity": "WD",
       "edDraftURI": "https://w3c.github.io/webcrypto/KeyDiscovery.html",
@@ -730,7 +729,7 @@
       <a class="logo" href="https://www.w3.org/"><img width="72" height="48" src="https://www.w3.org/StyleSheets/TR/2016/logos/W3C" alt="W3C"></a>
     </p>
     <h1 class="title p-name" id="title" property="dcterms:title">WebCrypto Key Discovery</h1>
-    <h2 id="w3c-editor-s-draft-23-march-2016"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time property="dcterms:issued" class="dt-published" datetime="2016-03-23">23 March 2016</time></h2>
+    <h2 id="w3c-editor-s-draft-07-october-2016"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time property="dcterms:issued" class="dt-published" datetime="2016-10-07">07 October 2016</time></h2>
     <dl>
       <dt>This version:</dt>
       <dd><a class="u-url" href="https://w3c.github.io/webcrypto/KeyDiscovery.html">https://w3c.github.io/webcrypto/KeyDiscovery.html</a></dd>