Fix line length in docstrings to comply with E501

Author: vivupadi

pandas/core/frame.py

@@ -9572,7 +9572,8 @@ def groupby(
         b   12.3  123.0
         NaN 12.3   33.0
 
-        When using ``.apply()``, use ``group_keys`` to include or exclude the group keys.
+        When using ``.apply()``, use ``group_keys`` to include or exclude the 
+        group keys.
         The ``group_keys`` argument defaults to ``True`` (include).
 
         >>> df = pd.DataFrame({'Animal': ['Falcon', 'Falcon',

pandas/core/series.py

@@ -2067,7 +2067,8 @@ def groupby(
         Examples
         --------
         >>> ser = pd.Series([390., 350., 30., 20.],
-        ...                 index=['Falcon', 'Falcon', 'Parrot', 'Parrot'], name="Max Speed")
+        ...                 index=['Falcon', 'Falcon', 'Parrot', 'Parrot'], 
+                            name="Max Speed")
         >>> ser
         Falcon    390.0
         Falcon    350.0