bpo-39674: Update collections ABC deprecation doc (GH-18747)

diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 65cdf34aa4e4fe5664a629275a3914ff7c4cf61f..8dcf9451d72bfe48e469e2df31d7887945b8f980 100644 (file)
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -36,7 +36,7 @@ Python's general purpose built-in containers, :class:`dict`, :class:`list`,
 .. deprecated-removed:: 3.3 3.10
     Moved :ref:`collections-abstract-base-classes` to the :mod:`collections.abc` module.
     For backwards compatibility, they continue to be visible in this module through
-    Python 3.8.
+    Python 3.9.
 
 
 :class:`ChainMap` objects