Adding documentation for extensions options pages.

chrome/common/extensions/docs/template/api_template.html

   <div id="container">
       <!-- SUBTEMPLATES: DO NOT MOVE FROM THIS LOCATION -->
       <!-- In particular, sub-templates that recurse, must be used by allowing
            jstemplate to make a copy of the template in this section which
            are not operated on by way of the jsskip="true" -->
       <div jsskip="true" style="display:none">
 
         <!-- VALUE -->
         <div id="valueTemplate">
           <dt>
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                   <li><a href="browserAction.html">Browser Actions</a></li>
                   <li><a href="ntp.html">New Tab Pages</a></li>
                   <li><a href="pageAction.html">Page Actions</a></li>
                   <li><a href="themes.html">Themes</a></li>
                 </ul>
               </li>
               <li> More Interaction
                 <ul>
                   <li><a href="bookmarks.html">Bookmarks</a></li>
                   <li><a href="events.html">Events</a></li>
+                  <li><a href="options.html">Options Page</a></li>
                   <li><a href="tabs.html">Tabs</a></li>
                   <li><a href="windows.html">Windows</a></li>
                 </ul>
               </li>
               <li> Implementation
                 <ul>
                   <li><a href="background_pages.html">Background Pages</a></li>
                   <li><a href="content_scripts.html">Content Scripts</a></li>
                   <li><a href="xhr.html">Cross-Origin XHR</a></li>
                   <li><a href="npapi.html">NPAPI Plugins</a></li>
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     _uanchor=1;
     _uff=0;
     urchinTracker();
   }
   catch(e) {/* urchinTracker not available. */}
 </script>
 <!-- end analytics -->
 
     </div> <!-- /pageFooter -->
   </div> <!-- /container -->