Remove .html extension from links

chrome/common/extensions/docs/templates/articles/whats_new.html

 <h1>What's New in {{platformTitle}}</h1>
 <p>
 This page lists the API and manifest changes
 made in recent releases.
 </p>
 
 {{#c:changes}}
   <h2 id="{{c.version}}">Google Chrome {{c.version}}</h2>
   {{?c.apis}}
   <h4 id="{{c.version}}-new-apis">New APIs</h4>
   <ul>
     {{#api:c.apis}}
-      <li id="{{api.name}}"><a href="{{api.name}}.html">{{api.name}}</a>: {{{api.description}}}</li>
+      <li id="{{api.name}}"><a href="{{api.name}}">{{api.name}}</a>: {{{api.description}}}</li>
     {{/}}
   </ul>
   {{/}}
   {{?c.additionsToExistingApis}}
   <h4 id="{{c.version}}-additions-to-existing-apis">Additions to existing APIs</h4>
   <ul>
     {{#additions:c.additionsToExistingApis}}
       <li id="{{additions.id}}">{{{additions.description}}}</li>
     {{/}}
   </ul>
   {{/}}
   {{?c.manifestChanges}}  
   <h4 id="{{c.version}}-manifest-changes">Manifest changes</h4>
   <ul>
     {{#manifest:c.manifestChanges}}
       <li id="{{manifest.id}}">{{{manifest.description}}}</li>
     {{/}}
   </ul>
   {{/}}
-{{/}}
+{{/}}