Dynamically generate a heading for Extension Docs API pages

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

-<p id="classSummary">
-The <code>chrome.management</code> module provides ways to manage the list of extensions/apps that are installed and running. It is particularly useful for extensions that <a href="override.html">override</a> the built-in New Tab page.
-</p>
-
 <h2 id="manifest">Manifest</h2>
 
 <p>You must declare the "management" permission
 in the <a href="manifest.html">extension manifest</a>
 to use the management API.
 For example:</p>
 <pre>{
   "name": "My extension",
   ...
   <b>"permissions": [
     "management"
   ]</b>,
   ...
 }</pre>
 
 <p>
 $ref:management.getPermissionWarningsByManifest and
 $ref:management.uninstallSelf do not require the management permission
 </p>