[3.13] Fix typo in XMLParser doc (GH-124129) (#124280)

Fix typo in XMLParser doc (GH-124129)
(cherry picked from commit 622368d)

Co-authored-by: Jacob Walls <[email protected]>

Author: miss-islington

Doc/library/xml.etree.elementtree.rst

@@ -1375,7 +1375,7 @@ XMLParser Objects
 
    .. versionchanged:: 3.8
       Parameters are now :ref:`keyword-only <keyword-only_parameter>`.
-      The *html* argument no longer supported.
+      The *html* argument is no longer supported.
 
 
    .. method:: close()