Doc change: Add a direct link to the configure commands dialog.

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

 <h2 id="manifest">Manifest</h2>
 <p>
 You must have a <code>"manifest_version"</code> of at least <code>2</code> to use this API.
 </p>
 
 {{?is_apps +partials.warning_dev /}}
 
 <h2 id="usage">Usage</h2>
 <p>The commands API allows you to define specific commands, and bind them to a
 default key combination. Each command your extension accepts must be listed in
 the manifest as an attribute of the 'commands' manifest key. An extension can
 have many commands but only 4 suggested keys can be specified. The user can
-manually add more shortcuts from the chrome://extensions page.</p>
+manually add more shortcuts from the chrome://extensions/configureCommands
+dialog.</p>
 
 <p>Supported keys: A-Z, 0-9, Comma, Period, Home, End, PageUp, PageDown, Insert,
 Delete, Arrow keys (Up, Down, Left, Right) and the Media Keys
 (MediaNextTrack, MediaPlayPause, MediaPrevTrack, MediaStop).</p>
 
 <p>Note: All key combinations must include either Ctrl* or Alt. Combinations
 that involve Ctrl+Alt are not permitted in order to avoid conflicts with the
 AltGr key. Shift can be used in addition to Alt or Ctrl, but is not required.
 Modifiers (such as Ctrl) can not be used in combination with the Media Keys.
 Tab key was removed from list of supported keys in Chrome version 33 and above
@@ skipping 77 matching lines @@
     "toggle-feature-foo": {
       "suggested_key": {
         "default": "Ctrl+Shift+5"
       },
       "description": "Toggle feature foo",
       <b>"global": true</b>
     }
   },
   ...
 }</pre>