fix a typo in whatsnew/3.11 (GH-98603)

(cherry picked from commit 4564490)

Co-authored-by: July Tikhonov <[email protected]>

Author: miss-islington

Doc/whatsnew/3.11.rst

@@ -1904,7 +1904,7 @@ C APIs pending removal are
 Removed
 =======
 
-This section lists Python APIs that have been removed in Python 3.12.
+This section lists Python APIs that have been removed in Python 3.11.
 
 Removed C APIs are :ref:`listed separately <whatsnew311-c-api-removed>`.