uncommenting FilterOptions wrongly commented out

Author: Eduardo Fullea

index.html

@@ -1781,7 +1781,7 @@ <h2><a>MessagingFilter</a> Dictionary</h2>
 </section>
 
 <!------------------------ Dictionary FilterOptions -------------------------->
-<!--section>
+<section>
   <h2><a>FilterOptions</a> Dictionary</h2>
   <dl title="dictionary FilterOptions" class="idl">
     <dt>DOMString sortBy</dt>
@@ -1798,7 +1798,7 @@ <h2><a>FilterOptions</a> Dictionary</h2>
   </dl>    
 </section>
 
-
+<!--
   <p class="issue">
   It needs to be discussed whether to just allow using the above
   messaging-specific MessagingFilter or otherwise to allow defining filters with