Fix trailing errors

Author: Krishna-web-hub

Doc/library/argparse.rst

@@ -1688,7 +1688,9 @@ Sub-commands
                      for a ``'run'`` command).
       :param kwargs: All other keyword arguments are passed directly to the
                      :class:`!ArgumentParser` constructor.
+
       This returned :class:`!ArgumentParser` object can be modified as usual.
+      
    Description of parameters:
 
    * *title* - title for the sub-parser group in help output; by default