Remove period from end of headings.
diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 9204758..d28a11f 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -1,6 +1,5 @@
-
-:mod:`contextlib` --- Utilities for :keyword:`with`\ -statement contexts.
-=========================================================================
+:mod:`contextlib` --- Utilities for :keyword:`with`\ -statement contexts
+========================================================================
.. module:: contextlib
:synopsis: Utilities for with-statement contexts.