[3.14] Docs: Use arguments to replace args in argparse.rst (GH-135510) (GH-135866)

Docs: Use `arguments` to replace `args` in `argparse.rst` (GH-135510)
(cherry picked from commit caad163)

Co-authored-by: Yongzi Li <[email protected]>

Author: miss-islington

Doc/library/argparse.rst

@@ -955,7 +955,7 @@ See also :ref:`specifying-ambiguous-arguments`. The supported values are:
 
 .. index:: single: + (plus); in argparse module
 
-* ``'+'``. Just like ``'*'``, all command-line args present are gathered into a
+* ``'+'``. Just like ``'*'``, all command-line arguments present are gathered into a
   list.  Additionally, an error message will be generated if there wasn't at
   least one command-line argument present.  For example::