Add missing word "be" in CL description comments

tests/git_cl_test.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Unit tests for git_cl.py."""
 
 import os
 import StringIO
 import stat
@@ skipping 313 matching lines @@
       find_copies = True
     elif '--no-find-copies' in upload_args:
       find_copies = False
     else:
       find_copies = None
 
     self.calls = self._upload_calls(similarity, find_copies)
     def RunEditor(desc, _):
       self.assertEquals(
           '# Enter a description of the change.\n'
-          '# This will displayed on the codereview site.\n'
+          '# This will be displayed on the codereview site.\n'
           '# The first line will also be used as the subject of the review.\n' +
           expected_description,
           desc)
       return returned_description
     self.mock(git_cl.gclient_utils, 'RunEditor', RunEditor)
     def check_upload(args):
       cmd_line = self._cmd_line(final_description, reviewers, similarity,
                                 find_copies)
       self.assertEquals(cmd_line, args)
       return 1, 2
@@ skipping 271 matching lines @@
     for orig, reviewers, expected in data:
       obj = git_cl.ChangeDescription(orig)
       obj.update_reviewers(reviewers)
       self.assertEqual(expected, obj.description)
 
 
 if __name__ == '__main__':
   git_cl.logging.basicConfig(
       level=git_cl.logging.DEBUG if '-v' in sys.argv else git_cl.logging.ERROR)
   unittest.main()