Fix highlighting in docs

Summary: This is currently highlighted wrong because two consecutive code block merges together: www.phabricator.com/docs/javelin/article/Concepts_Event_Delegation.html

Test Plan: Generated docs.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3359

src/docs/concepts/event_delegation.diviner

@@ -135,9 +135,10 @@ before the listener subscribed to 'outer'
     </div>
   </div>
 
-  lang=js
+  <script type="text/javascript">
   JX.Stratcom.listen('click', ['outer'], function(e) { ... });
   JX.Stratcom.listen('click', ['inner'], function(e) { ... });
+  </script>
 
 
 = Listening to Class Events =