Quick spelling clean-up in the auto-bisect code.

tools/prepare-bisect-perf-regression.py

 #!/usr/bin/env python
 # Copyright (c) 2013 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.
 
 """Prepare Performance Test Bisect Tool
 
-This script is used by a trybot to create a working directory and sync an
+This script is used by a try bot to create a working directory and sync an
 initial copy of the depot for use in bisecting performance regressions.
 
 An example usage:
 
 ./tools/prepare-bisect-perf-regressions.py --working_directory "~/builds"
   --output_buildbot_annotations
 
 Would result in creating ~/builds/bisect and then populating it with a copy of
 the depot.
 """
 
 import optparse
 import sys
 
 from auto_bisect import bisect_utils
 
 
 def main():
   """Does an initial checkout of Chromium then exits."""
 
   usage = ('%prog [options] [-- chromium-options]\n'
-           'Prepares a temporary depot for use on a trybot.')
+           'Prepares a temporary depot for use on a try bot.')
 
   parser = optparse.OptionParser(usage=usage)
 
   parser.add_option('-w', '--working_directory',
                     type='str',
                     help='Path to the working directory where the script will '
                     'do an initial checkout of the chromium depot. The '
                     'files will be placed in a subdirectory "bisect" under '
                     'working_directory and that will be used to perform the '
                     'bisection.')
@@ skipping 20 matching lines @@
     try:
       bisect_utils.CreateBisectDirectoryAndSetupDepot(
           opts, bisect_utils.DEFAULT_GCLIENT_CUSTOM_DEPS)
     except RuntimeError:
       return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())