Remove period from end of headings.
diff --git a/Doc/library/cgi.rst b/Doc/library/cgi.rst
index 3879e0d..1e14e4b 100644
--- a/Doc/library/cgi.rst
+++ b/Doc/library/cgi.rst
@@ -1,6 +1,5 @@
-
-:mod:`cgi` --- Common Gateway Interface support.
-================================================
+:mod:`cgi` --- Common Gateway Interface support
+===============================================
 
 .. module:: cgi
    :synopsis: Helpers for running Python scripts via the Common Gateway Interface.