DOC: whatsnew corrections

Author: jreback

doc/source/whatsnew/v0.17.0.txt

@@ -40,7 +40,6 @@ Highlights include:
 - Development support for benchmarking with the `Air Speed Velocity library <https://github.com/spacetelescope/asv/>`_ (:issue:`8316`)
 - Support for reading SAS xport files, see :ref:`here <whatsnew_0170.enhancements.sas_xport>`
 - Removal of the automatic TimeSeries broadcasting, deprecated since 0.8.0, see :ref:`here <whatsnew_0170.prior_deprecations>`
-- Support for math functions in .eval(), see :ref:`here <whatsnew_0170.matheval>`
 
 Check the :ref:`API Changes <whatsnew_0170.api>` and :ref:`deprecations <whatsnew_0170.deprecations>` before updating.
 
@@ -192,7 +191,7 @@ See the :ref:`docs <io.sas>` for more details.
 Support for Math Functions in .eval()
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-:meth:`~pandas.eval` now supports calling math functions.
+:meth:`~pandas.eval` now supports calling math functions (:issue:`4893`)
 
 .. code-block:: python