fix the error "pandas.Series.plot in See Also section does not need pandas prefix, use Series.plot instead."

Author: jmalp

pandas/plotting/_core.py

@@ -612,7 +612,7 @@ def boxplot_frame_groupby(
     See Also
     --------
     pandas.DataFrame.boxplot : Create a box plot from a DataFrame.
-    pandas.Series.plot : Plot a Series.
+    Series.plot : Plot a Series.
 
     Examples
     --------