Remove .html extension from links

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

 <h1>Manifest Version</h1>
 
 <style type="text/css">
 #schedule h3 {
   margin-bottom:0;
 }
 
 #schedule p {
   margin-top:0;
   margin-bottom:1em;
 }
 </style>
 
 <p>
   Extensions, themes, and applications are simply bundles of resources, wrapped
-  up with a <a href="manifest.html"><code>manifest.json</code></a> file that
+  up with a <a href="manifest"><code>manifest.json</code></a> file that
   describes the package's contents. The format of this file is generally stable,
   but occasionally breaking changes must be made to address important issues.
   Developers should specify which version of the manifest specification their
   package targets by setting a <code>manifest_version</code> key in their
   manifests.
 </p>
 
 <h2 id="current-version">Current Version</h2>
 
 <p>
@@ skipping 59 matching lines @@
 </div>
 
 <h2 id="manifest-v1-changes">Changes between version 1 and 2</h2>
 
 <ul>
   <li>
     <p>
       A content security policy is set to <code>`script-src 'self'
       chrome-extension-resource:; object-src 'self'</code> by default. This has
       a variety of impacts on developers, described at length in the
-      <a href="../extensions/contentSecurityPolicy.html">
+      <a href="../extensions/contentSecurityPolicy">
       <code>content_security_policy</code></a> documentation.
     </p>
   </li>
   <li>
     <p>
       A package's resources are no longer available by default to external
       websites (as the <code>src</code> of an image, or a <code>script</code>
       tag). If you want a website to be able to load a resource contained in
       your package, you'll need to explicitly whitelist it via the
-      <a href="manifest/web_accessible_resources.html">
+      <a href="manifest/web_accessible_resources">
         <code>web_accessible_resources</code>
       </a> manifest attribute. This is particularly relevant for extensions that
       build up an interface on a website via injected content scripts.
     </p>
   </li>
   <li>
     <p>
       The <code>background_page</code> property has been replaced with a
       <code>background</code> property that contains <em>either</em> a
       <code>scripts</code> or <code>page</code> property. Details are available
-      in the <a href="event_pages.html">Event Pages</a> documentation.
+      in the <a href="event_pages">Event Pages</a> documentation.
     </p>
   </li>
   <li>
     <p>Browser action changes:</p>
     <ul>
       <li>
         <p>
           The <code>browser_actions</code> key in the manifest, and the
           <code>chrome.browserActions</code> API are gone. Use the singular
-          <a href="browserAction.html">
+          <a href="browserAction">
             <code>browser_action</code> and <code>chrome.browserAction</code>
           </a> instead.
         </p>
       </li>
       <li>
         <p>
           The <code>icons</code> property of <code>browser_action</code> has
-          been removed. Use <a href="browserAction.html#manifest">
+          been removed. Use <a href="browserAction#manifest">
             the <code>default_icon</code> property
           </a> or $(ref:browserAction.setIcon) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>name</code> property of <code>browser_action</code> has been
-          removed. Use <a href="browserAction.html#manifest">
+          removed. Use <a href="browserAction#manifest">
             the <code>default_title</code> property
           </a> or $(ref:browserAction.setTitle) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>popup</code> property of <code>browser_action</code> has
-          been removed. Use <a href="browserAction.html#manifest">
+          been removed. Use <a href="browserAction#manifest">
             the <code>default_popup</code> property
           </a> or $(ref:browserAction.setPopup) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>default_popup</code> property of <code>browser_action</code>
           can no longer be specified as an object. It must be a string.
         </p>
       </li>
     </ul>
   </li>
   <li>
     <p>Page action changes:</p>
     <ul>
       <li>
         <p>
           The <code>page_actions</code> key in the manifest, and the
           <code>chrome.pageActions</code> API are gone. Use the singular
-          <a href="pageAction.html">
+          <a href="pageAction">
             <code>page_action</code> and <code>chrome.pageAction</code>
           </a> instead.
         </p>
       </li>
       <li>
         <p>
           The <code>icons</code> property of <code>page_action</code> has been
-          removed. Use <a href="pageAction.html#manifest">
+          removed. Use <a href="pageAction#manifest">
             the <code>default_icon</code> property
           </a> or $(ref:pageAction.setIcon) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>name</code> property of <code>page_action</code> has been
-          removed. Use <a href="pageAction.html#manifest">
+          removed. Use <a href="pageAction#manifest">
             the <code>default_title</code> property
           </a> or $(ref:pageAction.setTitle) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>popup</code> property of <code>page_action</code> has been
-          removed. Use <a href="pageAction.html#manifest">
+          removed. Use <a href="pageAction#manifest">
             the <code>default_popup</code> property
           </a> or $(ref:pageAction.setPopup) instead.
         </p>
       </li>
       <li>
         <p>
           The <code>default_popup</code> property of <code>page_action</code>
           can no longer be specified as an object. It must be a string.
         </p>
       </li>
     </ul>
   </li>
   <li>
     <p>
       The <code>chrome.self</code> API has been removed. Use
-      <a href="extension.html"><code>chrome.extension</code></a> instead.
+      <a href="extension"><code>chrome.extension</code></a> instead.
     </p>
   </li>
   <li>
     <p>
       <code>chrome.extension.getTabContentses</code> (!!!) and
       <code>chrome.extension.getExtensionTabs</code> are gone. Use
       $(ref:extension.getViews) instead.
     </p>
   </li>
   <li>
     <p>
       <code>Port.tab</code> is gone. Use
       $(ref:runtime.Port)
       instead.
     </p>
   </li>
 </ul>