[doc] Fix abc.update_abstractmethods markup (GH-23576)
Add link to ABCMeta while at it.
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 3a7414d..1a6ed47 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -336,6 +336,7 @@
.. versionadded:: 3.4
.. function:: update_abstractmethods(cls)
+
A function to recalculate an abstract class's abstraction status. This
function should be called if a class's abstract methods have been
implemented or changed after it was created. Usually, this function should
@@ -343,7 +344,7 @@
Returns *cls*, to allow usage as a class decorator.
- If *cls* is not an instance of ABCMeta, does nothing.
+ If *cls* is not an instance of :class:`ABCMeta`, does nothing.
.. note::