Fixing formatting of dart:html's dart2js annotations.

tools/dom/templates/html/impl/impl_History.darttemplate

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of $LIBRARYNAME;
 
-$ANNOTATIONS
-class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
+$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
   /**
    * Checks if the State APIs are supported on the current platform.
    *
    * See also:
    *
    * * [pushState]
    * * [replaceState]
    * * [state]
    */
 $if DART2JS
   static bool get supportsState => JS('bool', '!!window.history.pushState');
 $else
   static bool get supportsState => true;
 $endif
 $!MEMBERS}