typo.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@5455 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/lib/form/rowSet.jelly

@@ -17,6 +17,6 @@
   <d:invokeBody />
   <tr id="rowGroupEnd${id}" style="display:none" />
   <script>
-    applyNameRef($$('${head}}') , $$('rowGroupEnd${id}') , '${ref}')
+    applyNameRef($$('${head}') , $$('rowGroupEnd${id}') , '${ref}')
   </script>
 </j:jelly>
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