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DOC: minor correction to v0.23.2.txt #21644

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4 changes: 2 additions & 2 deletions doc/source/whatsnew/v0.23.2.txt
Original file line number Diff line number Diff line change
Expand Up @@ -61,8 +61,8 @@ Fixed Regressions
Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~

- Improved performance of membership checks in :class:`CategoricalIndex`
(i.e. ``x in ci``-style checks are much faster). :meth:`CategoricalIndex.contains`
- Improved performance of membership checks in :class:`Categorical` and :class:`CategoricalIndex`
(i.e. ``x in cat``-style checks are much faster). :meth:`CategoricalIndex.contains`
is likewise much faster (:issue:`21369`, :issue:`21508`)
- Improved performance of :meth:`HDFStore.groups` (and dependent functions like
:meth:`~HDFStore.keys`. (i.e. ``x in store`` checks are much faster)
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