Merge pull request google#348 from 284km/fix_a_typo

Fix a typo in cpplint

Author: gpshead

cpplint/cpplint.py

@@ -575,7 +575,7 @@ def ProcessHppHeadersOption(val):
     # Automatically append to extensions list so it does not have to be set 2 times
     _valid_extensions.update(_hpp_headers)
   except ValueError:
-    PrintUsage('Header extensions must be comma seperated list.')
+    PrintUsage('Header extensions must be comma separated list.')
 
 def IsHeaderExtension(file_extension):
   return file_extension in _hpp_headers
@@ -6204,7 +6204,7 @@ def ParseArguments(args):
       try:
           _valid_extensions = set(val.split(','))
       except ValueError:
-          PrintUsage('Extensions must be comma seperated list.')
+          PrintUsage('Extensions must be comma separated list.')
     elif opt == '--headers':
       ProcessHppHeadersOption(val)