Closes #22675: fix typo.

Lib/argparse.py

@@ -490,7 +490,7 @@ class HelpFormatter(object):
         action_width = help_position - self._current_indent - 2
         action_header = self._format_action_invocation(action)
 
-        # ho nelp; start on same line and add a final newline
+        # no help; start on same line and add a final newline
         if not action.help:
             tup = self._current_indent, '', action_header
             action_header = '%*s%s\n' % tup