Remove period from end of headings.
diff --git a/Doc/library/pickletools.rst b/Doc/library/pickletools.rst
index b07e3bd..ea16190 100644
--- a/Doc/library/pickletools.rst
+++ b/Doc/library/pickletools.rst
@@ -1,6 +1,5 @@
-
-:mod:`pickletools` --- Tools for pickle developers.
-===================================================
+:mod:`pickletools` --- Tools for pickle developers
+==================================================
.. module:: pickletools
:synopsis: Contains extensive comments about the pickle protocols and pickle-machine