Backport source links from 3.x.
Existing links have been updated to use the new reST role. In some
files, I have also made cosmetic changes to the header.
diff --git a/Doc/library/profile.rst b/Doc/library/profile.rst
index 87e2fbe..236324d 100644
--- a/Doc/library/profile.rst
+++ b/Doc/library/profile.rst
@@ -1,4 +1,3 @@
-
.. _profile:
********************
@@ -10,6 +9,9 @@
.. module:: profile
:synopsis: Python source profiler.
+**Source code:** :source:`Lib/profile.py` and :source:`Lib/pstats.py`
+
+--------------
.. _profiler-introduction: