Issue #18758: Fixed and improved cross-references.
diff --git a/Doc/library/configparser.rst b/Doc/library/configparser.rst
index f9a87ef..024d27c 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -371,7 +371,8 @@
parser.
:mod:`configparser` objects behave as close to actual dictionaries as possible.
-The mapping interface is complete and adheres to the ``MutableMapping`` ABC.
+The mapping interface is complete and adheres to the
+:class:`~collections.abc.MutableMapping` ABC.
However, there are a few differences that should be taken into account:
* By default, all keys in sections are accessible in a case-insensitive manner