fix code examples III

Author: topper-123

doc/source/user_guide/groupby.rst

@@ -1225,7 +1225,7 @@ The dimension of the returned result can also change:
 that is itself a series, and possibly upcast the result to a DataFrame:
 
 .. ipython:: python
-   :okwarning:
+    :okwarning:
 
     def f(x):
         return pd.Series([x, x ** 2], index=["x", "x^2"])

doc/source/whatsnew/v0.10.0.rst

@@ -243,16 +243,26 @@ Convenience methods ``ffill`` and  ``bfill`` have been added:
   function, that is itself a series, and possibly upcast the result to a
   DataFrame
 
-  .. ipython:: python
-     :okwarning:
-
-      def f(x):
-          return pd.Series([x, x ** 2], index=["x", "x^2"])
-
-
-      s = pd.Series(np.random.rand(5))
-      s
-      s.apply(f)
+  .. code-block:: python
+
+     >>> def f(x):
+     ...     return pd.Series([x, x ** 2], index=["x", "x^2"])
+     >>>
+     >>> s = pd.Series(np.random.rand(5))
+     >>> s
+     0    0.340445
+     1    0.984729
+     2    0.919540
+     3    0.037772
+     4    0.861549
+     dtype: float64
+     >>> s.apply(f)
+               x       x^2
+     0  0.340445  0.115903
+     1  0.984729  0.969691
+     2  0.919540  0.845555
+     3  0.037772  0.001427
+     4  0.861549  0.742267
 
 - New API functions for working with pandas options (:issue:`2097`):