more formatting correction

Author: ApoorvApoorv

pandas/core/series.py

@@ -1829,14 +1829,12 @@ def _set_name(
         1    185.0
         Name: Max Speed, dtype: float64
 
-
         We can group by a level of the index:
         >>> ser.groupby(level=0).mean()
         Falcon    370.0
         Parrot     25.0
         Name: Max Speed, dtype: float64
 
-
         We can group by a condition applied to the Series values:
         >>> ser.groupby(ser > 100).mean()
         Max Speed