Add a few missing source links from 2.7 and harmonize lib docs headers
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 8d602fe..612c152 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -6,10 +6,10 @@
.. moduleauthor:: Steven Bethard <steven.bethard@gmail.com>
.. sectionauthor:: Steven Bethard <steven.bethard@gmail.com>
-**Source code:** :source:`Lib/argparse.py`
-
.. versionadded:: 3.2
+**Source code:** :source:`Lib/argparse.py`
+
--------------
The :mod:`argparse` module makes it easy to write user-friendly command-line