gh-93391: fix typo in array docs (GH-93392) (GH-93394)

Fixes GH-93391

(cherry picked from commit fc69436)

Co-authored-by: ynfle <[email protected]>

Author: miss-islington

Doc/library/array.rst

@@ -52,7 +52,7 @@ Notes:
 
    .. versionchanged:: 3.9
       ``array('u')`` now uses ``wchar_t`` as C type instead of deprecated
-      ``Py_UNICODE``. This change doesn't affect to its behavior because
+      ``Py_UNICODE``. This change doesn't affect its behavior because
       ``Py_UNICODE`` is alias of ``wchar_t`` since Python 3.3.
 
    .. deprecated-removed:: 3.3 4.0