Update _codespell.py

codespell_lib/_codespell.py

diff --git a/codespell_lib/_codespell.py b/codespell_lib/_codespell.py
index b71f4a2..e7b72b7 100755
--- a/codespell_lib/_codespell.py
+++ b/codespell_lib/_codespell.py
@@ -270,7 +270,8 @@
                              'you\'d give "*.eps,*.txt" to this option.')
 
     parser.add_argument('-x', '--exclude-file', type=str, metavar='FILE',
-                        help='FILE with lines that should not be changed')
+                        help='FILE with lines that should not be checked for '
+                             'errors or changed')
 
     parser.add_argument('-i', '--interactive',
                         action='store', type=int, default=0,