Better whatsnew

Author: TomAugspurger

doc/source/whatsnew/v0.23.0.txt

@@ -958,7 +958,7 @@ Offsets
 
 Numeric
 ^^^^^^^
-- Better error message when matplotlib is not installed (:issue:`19810`).
+- Better error message when attempting to plot but matplotlib is not installed (:issue:`19810`).
 - Bug in :meth:`DataFrame.rank` and :meth:`Series.rank` when ``method='dense'`` and ``pct=True`` in which percentile ranks were not being used with the number of distinct observations (:issue:`15630`)
 - Bug in :class:`Series` constructor with an int or float list where specifying ``dtype=str``, ``dtype='str'`` or ``dtype='U'`` failed to convert the data elements to strings (:issue:`16605`)
 - Bug in :class:`Index` multiplication and division methods where operating with a ``Series`` would return an ``Index`` object instead of a ``Series`` object (:issue:`19042`)