Remove .html extension from links

chrome/common/extensions/docs/templates/intros/pageAction.html

 <p>
 Some examples:
 </p>
 <ul>
   <li> Subscribe to this page's RSS feed </li>
   <li> Make a slideshow out of this page's photos </li>
 </ul>
 
 <p>
 The RSS icon in the following screenshot
 represents a page action
 that lets you subscribe to
 the RSS feed for the current page.
 </p>
 
 <img src="{{static}}/images/page-action.png"
   width="361" height="79" />
 
 <p>
 If you want the extension's icon to always be visible,
-use a <a href="browserAction.html">browser action</a> instead.
+use a <a href="browserAction">browser action</a> instead.
 </p>
 
 <h2 id="manifest">Manifest</h2>
 
 <p>
 Register your page action in the
-<a href="manifest.html">extension manifest</a>
+<a href="manifest">extension manifest</a>
 like this:
 </p>
 
 <pre data-filename="manifest.json">
 {
   "name": "My extension",
   ...
   <b>"page_action": {
     "default_icon": {                    <em>// optional</em>
       "19": "images/icon19.png",           <em>// optional</em>
       "38": "images/icon38.png"            <em>// optional</em>
     },
     "default_title": "Google Mail",      <em>// optional; shown in tooltip</em>
-    "default_popup": "popup.html"        <em>// optional</em>
+    "default_popup": "popup"        <em>// optional</em>
   }</b>,
   ...
 }</pre>
 
 <p>
 If you only provide one of the 19px or 38px icon size, the extension system will
 scale the icon you provide to the pixel density of the user's display, which
 can lose detail or make it look fuzzy. The old syntax for registering the
 default icon is still supported:
 </p>
@@ skipping 13 matching lines @@
 <h2 id="ui">Parts of the UI</h2>
 
 <p>
 Like browser actions,
 page actions can have an icon,
 a tooltip, and popup;
 they can't have badges, however.
 In addition, page actions can appear and disappear.
 You can find information about icons, tooltips, and popups
 by reading about the
-<a href="browserAction.html#ui">browser action UI</a>.
+<a href="browserAction#ui">browser action UI</a>.
 </p>
 
 <p>
 You make a page action appear and disappear using the
 $(ref:pageAction.show) and
 $(ref:pageAction.hide) methods, respectively.
 By default, a page action is hidden.
 When you show it, you specify the tab
 in which the icon should appear.
 The icon remains visible
@@ skipping 10 matching lines @@
 <p>For the best visual impact,
 follow these guidelines:</p>
 
 <ul>
   <li><b>Do</b> use page actions
     for features that make sense
     for only a few pages.
   <li><b>Don't</b> use page actions
     for features that make sense
     for most pages.
-    Use <a href="browserAction.html">browser actions</a> instead.
+    Use <a href="browserAction">browser actions</a> instead.
   <li><b>Don't</b> constantly animate your icon.
     That's just annoying.
 </ul>
 
 
 <h2 id="examples"> Examples </h2>
 
 <p>
 You can find simple examples of using page actions in the
 <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/pageAction/">examples/api/pageAction</a>
 directory.
 For other examples and for help in viewing the source code, see
-<a href="samples.html">Samples</a>.
+<a href="samples">Samples</a>.
 </p>