Rephrase whatnew entry

Author: Marco Gorelli

doc/source/whatsnew/v1.0.0.rst

@@ -165,8 +165,8 @@ Categorical
 
 - Added test to assert the :func:`fillna` raises the correct ValueError message when the value isn't a value from categories (:issue:`13628`)
 - Bug in :meth:`Categorical.astype` where ``NaN`` values were handled incorrectly when casting to int (:issue:`28406`)
-- Using date accessors on a categorical dtyped series of datetimes was not returning a Series (or DataFrame) of the
-  same type as if one used the .str. / .dt. on a Series of that type, e.g. when accessing :meth:`Series.dt.tz_localize` on a
+- Using date accessors on a categorical dtyped :class:`Series` of datetimes was not returning an object of the
+  same type as if one used the :meth:`.str.` / :meth:`.dt.` on a :class:`Series` of that type. E.g. when accessing :meth:`Series.dt.tz_localize` on a
   :class:`Categorical` with duplicate entries, the accessor was skipping duplicates (:issue: `27952`)
 -