hixie: typo (whatwg r4277)

hixie: typo (whatwg r4277)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.3417&r2=1.3418&f=h
http://html5.org/tools/web-apps-tracker?from=4276&to=4277

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.3417
retrieving revision 1.3418
diff -u -d -r1.3417 -r1.3418
--- Overview.html	23 Oct 2009 00:14:23 -0000	1.3417
+++ Overview.html	23 Oct 2009 00:29:52 -0000	1.3418
@@ -50890,7 +50890,7 @@
   var internalDNDType = 'text/x-example'; // set this to something specific to your site
   function dragEnterHandler(event) {
     // cancel the event if the drag contains data of our type
-    if (event.dataTransfer.types.contains(internalDNDType)
+    if (event.dataTransfer.types.contains(internalDNDType))
       event.preventDefault();
   }
   function dragOverHandler(event) {