Fixed GroupBy to render func links in whatsnew

Author: WillAyd

doc/source/api.rst

@@ -2179,8 +2179,12 @@ Computations / Descriptive Stats
 .. autosummary::
    :toctree: generated/
 
+   GroupBy.all
+   GroupBy.any
+   GroupBy.bfill
    GroupBy.count
    GroupBy.cumcount
+   GroupBy.ffill
    GroupBy.first
    GroupBy.head
    GroupBy.last
@@ -2192,6 +2196,7 @@ Computations / Descriptive Stats
    GroupBy.nth
    GroupBy.ohlc
    GroupBy.prod
+   GroupBy.rank
    GroupBy.size
    GroupBy.sem
    GroupBy.std

doc/source/whatsnew/v0.23.0.txt

@@ -697,10 +697,10 @@ Performance Improvements
 - Improved performance of :func:`DataFrame.median` with ``axis=1`` when bottleneck is not installed (:issue:`16468`)
 - Improved performance of :func:`MultiIndex.get_loc` for large indexes, at the cost of a reduction in performance for small ones (:issue:`18519`)
 - Improved performance of pairwise ``.rolling()`` and ``.expanding()`` with ``.cov()`` and ``.corr()`` operations (:issue:`17917`)
-- Improved performance of :func:`DataFrameGroupBy.rank` (:issue:`15779`)
+- Improved performance of :func:`pandas.core.groupby.GroupBy.rank` (:issue:`15779`)
 - Improved performance of variable ``.rolling()`` on ``.min()`` and ``.max()`` (:issue:`19521`)
-- Improved performance of ``GroupBy.ffill`` and ``GroupBy.bfill`` (:issue:`11296`)
-- Improved performance of ``GroupBy.any`` and ``GroupBy.all`` (:issue:`15435`)
+- Improved performance of :func:`pandas.core.groupby.GroupBy.ffill` and :func:`pandas.core.groupby.GroupBy.bfill` (:issue:`11296`)
+- Improved performance of :func:`pandas.core.groupby.GroupBy.any` and :func:`pandas.core.groupby.GroupBy.all` (:issue:`15435`)
 
 .. _whatsnew_0230.docs: