Clarification in docstring of Series.value_counts (#25062)

Author: AllenDowney

Diff for: pandas/core/base.py

@@ -1234,7 +1234,7 @@ def value_counts(self, normalize=False, sort=True, ascending=False,
             If True then the object returned will contain the relative
             frequencies of the unique values.
         sort : boolean, default True
-            Sort by values.
+            Sort by frequencies.
         ascending : boolean, default False
             Sort in ascending order.
         bins : integer, optional