[3.14] Doc: Fix missing closing parenthesis in argparse example (GH-143488) (#143489)

Doc: Fix missing closing parenthesis in argparse example (GH-143488)
(cherry picked from commit 51227b6)

Co-authored-by: Xiao Yuan <yuanx749@gmail.com>

Author: miss-islington

Doc/library/argparse.rst

@@ -740,7 +740,7 @@ upper-cased name. For example::
 
    >>> parser = argparse.ArgumentParser(prog='PROG')
    >>> parser.add_argument('--foo-bar')
-   >>> parser.parse_args(['--foo-bar', 'FOO-BAR']
+   >>> parser.parse_args(['--foo-bar', 'FOO-BAR'])
    Namespace(foo_bar='FOO-BAR')
    >>> parser.print_help()
    usage:  [-h] [--foo-bar FOO-BAR]