Remove .html extension from links

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

 <h2 id="manifest">Manifest</h2>
 <p>
 When requested, a <code>$(ref:windows.Window)</code>
 will contain an array of <code>$(ref:tabs.Tab)</code> objects.
 
 You must declare the <code>"tabs"</code> permission in your
-<a href="manifest.html">manifest</a> if you require access to the
+<a href="manifest">manifest</a> if you require access to the
 <code>$(ref:tabs.Tab.url url)</code>,
 <code>$(ref:tabs.Tab.title title)</code>, or
 <code>$(ref:tabs.Tab.favIconUrl favIconUrl)</code> properties of
 <code>$(ref:tabs.Tab)</code>.
 For example:
 </p>
 
 <pre data-filename="manifest.json">
 {
   "name": "My extension",
@@ skipping 18 matching lines @@
 
 <p>For example, say an extension
 creates a few tabs or windows from a single HTML file,
 and that the HTML file
 contains a call to
 $(ref:tabs.query).
 The current window is the window that contains the page that made
 the call, no matter what the topmost window is.
 </p>
 
-<p>In the case of the <a href="event_pages.html">event page</a>,
+<p>In the case of the <a href="event_pages">event page</a>,
 the value of the current window falls back to the last active window. Under some
 circumstances, there may be no current window for background pages.
 </p>
 
 <h2 id="examples"> Examples </h2>
 
 <p>
 <img src="{{static}}/images/windows.png"
      width="561" height="224" alt="Two windows, each with one tab" />
 <br>
 You can find simple examples of using the windows module in the
 <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/windows/">examples/api/windows</a>
 directory.
 Another example is in the
 <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/tabs/inspector/tabs_api.html?content-type=text/plain">tabs_api.html</a> file
 of the
 <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/tabs/inspector/">inspector</a>
 example.
 For other examples and for help in viewing the source code, see
-<a href="samples.html">Samples</a>.
+<a href="samples">Samples</a>.
 </p>