update error msg

Author: bxngyn

render50

@@ -120,7 +120,7 @@ def main():
                     if re.search(r"[*?\[\]]", expression):
                         msg = "No files matched the pattern '{}'".format(os.path.basename(expression))
                     else:
-                        msg = "File '{}' does not exist.".format(expression)
+                        msg = "'{}' does not exist.".format(expression)
                     raise RuntimeError(msg)
                 paths += matches