Merge pull request #5750 from mortada/series_apply

DOC: added missing argument in Series.apply

Author: jreback

pandas/core/series.py

@@ -1993,6 +1993,9 @@ def apply(self, func, convert_dtype=True, args=(), **kwds):
         convert_dtype : boolean, default True
             Try to find better dtype for elementwise function results. If
             False, leave as dtype=object
+        args : tuple
+            Positional arguments to pass to function in addition to the value
+        Additional keyword arguments will be passed as keywords to the function
 
         See also
         --------