Issue #22558: Add remaining doc links to source code for Python-coded modules.
Reformat header above separator line (added if missing) to a common format.
Patch by Yoni Lavi.
diff --git a/Doc/library/plistlib.rst b/Doc/library/plistlib.rst
index 2c1f3dd..9ba2266 100644
--- a/Doc/library/plistlib.rst
+++ b/Doc/library/plistlib.rst
@@ -3,16 +3,17 @@
 
 .. module:: plistlib
    :synopsis: Generate and parse Mac OS X plist files.
+
 .. moduleauthor:: Jack Jansen
 .. sectionauthor:: Georg Brandl <georg@python.org>
 .. (harvested from docstrings in the original file)
 
+**Source code:** :source:`Lib/plistlib.py`
+
 .. index::
    pair: plist; file
    single: property list
 
-**Source code:** :source:`Lib/plistlib.py`
-
 --------------
 
 This module provides an interface for reading and writing the "property list"