FIX: remove whitespace from blank line in series.py

Author: Talyahav17

pandas/core/series.py

@@ -4380,8 +4380,6 @@ def map(
         provides a method for default values), then this default is used
         rather than ``NaN``.
 
-        
-
         Examples
         --------
         >>> s = pd.Series(["cat", "dog", np.nan, "rabbit"])