Update configparser docs for lowercasing rename.
diff --git a/Doc/library/shlex.rst b/Doc/library/shlex.rst
index 0ae77c1..1dfafbd 100644
--- a/Doc/library/shlex.rst
+++ b/Doc/library/shlex.rst
@@ -63,7 +63,7 @@
 
 .. seealso::
 
-   Module :mod:`ConfigParser`
+   Module :mod:`configparser`
       Parser for configuration files similar to the Windows :file:`.ini` files.