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/email.mime.rst b/Doc/library/email.mime.rst
index 67d0a67..8297dea 100644
--- a/Doc/library/email.mime.rst
+++ b/Doc/library/email.mime.rst
@@ -4,6 +4,9 @@
.. module:: email.mime
:synopsis: Build MIME messages.
+**Source code:** :source:`Lib/email/mime/`
+
+--------------
Ordinarily, you get a message object structure by passing a file or some text to
a parser, which parses the text and returns the root message object. However