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/binascii.rst b/Doc/library/binascii.rst
index 1752c63..878d8db 100644
--- a/Doc/library/binascii.rst
+++ b/Doc/library/binascii.rst
@@ -5,12 +5,13 @@
    :synopsis: Tools for converting between binary and various ASCII-encoded binary
               representations.
 
-
 .. index::
    module: uu
    module: base64
    module: binhex
 
+--------------
+
 The :mod:`binascii` module contains a number of methods to convert between
 binary and various ASCII-encoded binary representations. Normally, you will not
 use these functions directly but use wrapper modules like :mod:`uu`,