bpo-42419: Correct 'deprecatations' is What's New 3.9 (GH-23421)

diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index b89faf1..a638e54 100644
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -135,8 +135,8 @@
 <devmode>` which helps to prepare your code to make it compatible with the
 next Python version.
 
-Note: a number of pre-existing deprecatations were removed in this version
-of Python as well. Consult the :ref:`removed-in-python-39` section.
+Note: a number of pre-existing deprecations were removed in this version of
+Python as well. Consult the :ref:`removed-in-python-39` section.
 
 
 New Features