Fix typo in create_sdk.py.

tools/create_sdk.py

 #!/usr/bin/env python
 #
 # 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.
 #
 # A script which will be invoked from gyp to create an SDK.
 #
 # Usage: create_sdk.py sdk_directory
 #
@@ skipping 219 matching lines @@
         [('../../runtime/bin', '../io/runtime')])
 
   # Create and copy pkg.
   PKG = join(SDK_tmp, 'pkg')
   os.makedirs(PKG)
 
   #
   # Create and populate pkg/{args, intl, logging, unittest}
   #
 
-  for library in ['args', 'htmlescape', dartdoc', 'intl', 'logging', 'unittest']:
+  for library in ['args', 'htmlescape', 'dartdoc', 'intl', 'logging', 
+                  'unittest']:
     copytree(join(HOME, 'pkg', library), join(PKG, library),
              ignore=ignore_patterns('*.svn', 'doc', 'docs',
                                     '*.py', '*.gypi', '*.sh'))
 
   # Fixup dartdoc
   ReplaceInFiles([
       join(PKG, 'dartdoc', 'dartdoc.dart'),
     ], [
       ("final bool IN_SDK = false;",
        "final bool IN_SDK = true;"),
@@ skipping 37 matching lines @@
   if revision is not None:
     with open(os.path.join(SDK_tmp, 'revision'), 'w') as f:
       f.write(revision + '\n')
       f.close()
 
   move(SDK_tmp, SDK)
   utils.Touch(os.path.join(SDK, 'create.stamp'))
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))