Fixed double hyphens that are rendered to literal en-dashes in the documenation.
diff --git a/Doc/library/_winreg.rst b/Doc/library/_winreg.rst
index 3d9042c..a87cb9c 100644
--- a/Doc/library/_winreg.rst
+++ b/Doc/library/_winreg.rst
@@ -1,5 +1,5 @@
-:mod:`_winreg` -- Windows registry access
-=========================================
+:mod:`_winreg` --- Windows registry access
+==========================================
.. module:: _winreg
:platform: Windows
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index c4307b5..f93e945 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -1,5 +1,5 @@
-:mod:`importlib` -- Convenience wrappers for :func:`__import__`
-===============================================================
+:mod:`importlib` --- Convenience wrappers for :func:`__import__`
+================================================================
.. module:: importlib
:synopsis: Convenience wrappers for __import__
diff --git a/Doc/library/msvcrt.rst b/Doc/library/msvcrt.rst
index 87b8166..5e6d523 100644
--- a/Doc/library/msvcrt.rst
+++ b/Doc/library/msvcrt.rst
@@ -1,6 +1,6 @@
-:mod:`msvcrt` -- Useful routines from the MS VC++ runtime
-=========================================================
+:mod:`msvcrt` --- Useful routines from the MS VC++ runtime
+==========================================================
.. module:: msvcrt
:platform: Windows