DOC: Adding example and See also to head and tail method (#16416)

Author: Ho

pandas/core/generic.py

@@ -3625,8 +3625,8 @@ def tail(self, n=5):
 
         Examples
         --------
-        >>> df = pd.DataFrame({'animal':['falcon', 'parrot', 'lion',
-        ...                   'monkey', 'shark', 'bee', 'bear']})
+        >>> df = pd.DataFrame({'animal':['alligator', 'bee', 'falcon', 'lion',
+        ...                    'monkey', 'parrot', 'shark', 'whale', 'zebra']})
         >>> df
               animal
         0  alligator