STYLE: Fix sript name in whatsnew (pandas-dev#39992)

Author: alexprincel

doc/source/whatsnew/v1.3.0.rst

@@ -455,7 +455,7 @@ Other
 - Bug in :class:`Styler` where ``subset`` arg in methods raised an error for some valid multiindex slices (:issue:`33562`)
 - :class:`Styler` rendered HTML output minor alterations to support w3 good code standard (:issue:`39626`)
 - Bug in :meth:`DataFrame.equals`, :meth:`Series.equals`, :meth:`Index.equals` with object-dtype containing ``np.datetime64("NaT")`` or ``np.timedelta64("NaT")`` (:issue:`39650`)
-- Apply fixes of script check_namespace_usage.py on pandas/tests/indexes (:issue:`39992`)
+- Apply fixes of script check_for_inconsistent_pandas_namespace.py on pandas/tests/indexes (:issue:`39992`)
 
 
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