Fix a buggy link.

chrome/common/extensions/docs/static/manifest.html

 <div id="pageData-title" class="pageData">Formats: Manifest Files</div>
 <div id="pageData-showTOC" class="pageData">true</div>
 
 <p>
 Every extension has a
 <a href="http://www.json.org">JSON</a>-formatted manifest file,
 named <code>manifest.json</code>,
 that provides important information about the extension.
 </p>
 
@@ skipping 16 matching lines @@
   "<a href="#description">description</a>": "<em>A plain text description</em>",
   "<a href="#icons">icons</a>": { ... },
 
   <em>// Pick one (or none)</em>
   "<a href="browserAction.html">brower_action</a>": {...},
   "<a href="pageAction.html">page_action</a>": {...},
   "<a href="themes.html">theme</a>": {...},
 
   <em>// Add any of these that you need</em>
   "<a href="background_pages.html">background_page</a>": "<em>aFile</em>.html",
-  "<a href="ntp.html">chrome_url_overrides</a>": {...},
+  "<a href="override.html">chrome_url_overrides</a>": {...},
   "<a href="content_scripts.html">content_scripts</a>": [...],
   "<a href="options.html">options_page</a>": "<em>aFile</em>.html",
   "<a href="#permissions">permissions</a>": [...],
   "<a href="npapi.html">plugins</a>": [...]
   "<a href="autoupdate.html">update_url</a>": "http://<em>path/to/updateInfo</em>.xml",
 }
 </pre>
 
 
 <h2>Field details</h2>
@@ skipping 134 matching lines @@
 A missing integer is equal to zero.
 For example, 1.1.9.9999 is newer than 1.1.
 </p>
 
 <p>
 For more information, see
 <a href="autoupdate.html">Autoupdating</a>.
 </p>
 
 <!-- [PENDING: Possibly: point to the gallery and make a big deal of the fact that autoupdating is free if you use the gallery.] -->