Change docstring and move the entry in whatsnew

Author: makbigc

doc/source/whatsnew/v0.25.0.rst

@@ -40,7 +40,6 @@ Other Enhancements
 - :meth:`DataFrame.query` and :meth:`DataFrame.eval` now supports quoting column names with backticks to refer to names with spaces (:issue:`6508`)
 - :func:`merge_asof` now gives a more clear error message when merge keys are categoricals that are not equal (:issue:`26136`)
 - :meth:`pandas.core.window.Rolling` supports exponential (or Poisson) window type (:issue:`21303`)
-- :meth:`ExtensionArray.argsort` places the nan at the end of the sorted array (:issue:`21801`)
 
 .. _whatsnew_0250.api_breaking:
 
@@ -218,6 +217,7 @@ Other API Changes
 - Comparing :class:`Timestamp` with unsupported objects now returns :py:obj:`NotImplemented` instead of raising ``TypeError``. This implies that unsupported rich comparisons are delegated to the other object, and are now consistent with Python 3 behavior for ``datetime`` objects (:issue:`24011`)
 - Bug in :meth:`DatetimeIndex.snap` which didn't preserving the ``name`` of the input :class:`Index` (:issue:`25575`)
 - The ``arg`` argument in :meth:`pandas.core.groupby.DataFrameGroupBy.agg` has been renamed to ``func`` (:issue:`26089`)
+- :meth:`ExtensionArray.argsort` places the nan at the end of the sorted array (:issue:`21801`)
 
 .. _whatsnew_0250.deprecations:
 

pandas/core/arrays/base.py

@@ -371,7 +371,7 @@ def _values_for_argsort(self) -> Tuple[np.ndarray, np.ndarray]:
             The transformed values should maintain the ordering between values
             within the array.
         ndarray
-            The mask which indicates the NaN values.
+            The mask which indicates the NA values.
 
         See Also
         --------

pandas/core/arrays/integer.py

@@ -518,7 +518,7 @@ def _values_for_argsort(self) -> Tuple[np.ndarray, np.ndarray]:
             The transformed values should maintain the ordering between values
             within the array.
         ndarray
-            The mask which indicates the NaN values.
+            The mask which indicates the NA values.
 
         See Also
         --------