Remove .html extension from links

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

 <h1>Bluetooth</h1>
 
 <p>
   This document describes how to use the <a href="bluetooth.html">Bluetooth</a>,
   <a href="bluetoothSocket.html">Bluetooth Socket</a> and
   <a href="bluetoothLowEnergy.html">Bluetooth Low Energy</a> APIs to
   communicate with Bluetooth and Bluetooth Low Energy devices.
 </p>
 
 <p>
   For background information about Bluetooth, see the official
   <a href="http://www.bluetooth.org">Bluetooth specifications</a>.
 </p>
 
 <h2 id="manifest">Manifest requirements</h2>
 
 <p>
   For Chrome Apps that use Bluetooth, add the
-  <a href="manifest/bluetooth.html">bluetooth</a> entry to the manifest
+  <a href="manifest/bluetooth">bluetooth</a> entry to the manifest
   and specify, if appropriate, the UUIDs of profiles, protocols or services
   you wish to implement.
   For example:
 </p>
 
 <pre data-filename="manifest.json">
 "bluetooth": {
   "uuids": [ "1105", "1106" ]
 }
 </pre>
@@ skipping 464 matching lines @@
 <h3 id="stop-accepting">Stop accepting client connections</h3>
 
 <p>
   To stop accepting client connections and unpublish the service use
   $(ref:bluetoothSocket.disconnect).
 </p>
 
 <pre>
 chrome.bluetoothSocket.disconnect(serverSocketId);
 </pre>