#11785: fix the :mod: references in email package submodule titles.
diff --git a/Doc/library/email.header.rst b/Doc/library/email.header.rst
index 47a0749..7d2dc2e 100644
--- a/Doc/library/email.header.rst
+++ b/Doc/library/email.header.rst
@@ -1,5 +1,5 @@
-:mod:`email`: Internationalized headers
----------------------------------------
+:mod:`email.header`: Internationalized headers
+----------------------------------------------
.. module:: email.header
:synopsis: Representing non-ASCII headers