upd command name

devtools/linecount/check-line-length.py

@@ -9,7 +9,7 @@ from io import open
 
 if len(sys.argv)<3:
     print( """
-Usage: count-line-length <max_mum_chars_per_line> <files>
+Usage: check-line-length <max_mum_chars_per_line> <files>
 
 Returns 1 if any given file
     - exceeds the given number of characters per line,