Fix a lot of support links.

chrome/common/extensions/docs/templates/articles/manifest/requirements.html

 <h1 id="requirements">Manifest - Requirements</h1>
 
 <p>
 Technologies required by the app or extension.
 Hosting sites such as the Chrome Web Store may use this list
 to dissuade users from installing apps or extensions
 that will not work on their computer.
 Supported requirements currently include "3D" and "plugins";
 additional requirements checks may be added in the future.
 </p>
 
 <p>
 The "3D" requirement denotes GPU hardware acceleration.
 The "webgl" requirement refers to the
 <a href="http://www.khronos.org/webgl/">WebGL API</a>.
 For more information on Chrome 3D graphics support,
 see the help article on
-<a href="http://www.google.com/support/chrome/bin/answer.py?answer=1220892">WebGL and 3D graphics</a>.
+<a href="https://support.google.com/chrome/answer/1220892">WebGL and 3D graphics</a>.
 You can list the 3D-related features your app requires,
 as demonstrated in the following example:
 </p>
 
 <pre data-filename="manifest.json">
 "requirements": {
   "3D": {
     "features": ["webgl"]
   }
 }
@@ skipping 13 matching lines @@
 as shown in this example:
 </p>
 
 <pre data-filename="manifest.json">
 "requirements": {
   "plugins": {
     "npapi": true
   }
 }
 </pre>