bpo-39674: Update collections ABC deprecation doc (GH-18748)
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index a5e8d04..8dcf945 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -33,10 +33,10 @@
:class:`UserString` wrapper around string objects for easier string subclassing
===================== ====================================================================
-.. deprecated-removed:: 3.3 3.9
+.. 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