Use default flake8 config
diff --git a/pre_commit_hooks/check_json.py b/pre_commit_hooks/check_json.py
index b939350..f26e0a5 100644
--- a/pre_commit_hooks/check_json.py
+++ b/pre_commit_hooks/check_json.py
@@ -10,7 +10,7 @@
 
 def main(argv=None):  # type: (Optional[Sequence[str]]) -> int
     parser = argparse.ArgumentParser()
-    parser.add_argument('filenames', nargs='*', help='JSON filenames to check.')
+    parser.add_argument('filenames', nargs='*', help='Filenames to check.')
     args = parser.parse_args(argv)
 
     retval = 0