DOC: changes to use code-block declaration (#19400)

SarahJessica · jorisvandenbossche · commit 41e02a0c28e0 · 2018-01-26T12:18:37.000+01:00
diff --git a/doc/source/developer.rst b/doc/source/developer.rst
@@ -153,7 +153,7 @@ Libraries can use the decorators
 pandas objects. All of these follow a similar convention: you decorate a class, providing the name of attribute to add. The
 class's `__init__` method gets the object being decorated. For example:
 
-.. ipython:: python
+.. code-block:: python
 
    @pd.api.extensions.register_dataframe_accessor("geo")
    class GeoAccessor(object):
