[7.x] Update all rST :: to code-block directives

docs/api.rst

@@ -30,7 +30,9 @@ elasticsearch returns a 2XX response. Otherwise an instance of
 raised. You can see other exception and error states in :ref:`exceptions`. If
 you do not wish an exception to be raised you can always pass in an ``ignore``
 parameter with either a single status code that should be ignored or a list of
-them::
+them:
+
+.. code-block:: python
 
     from elasticsearch import Elasticsearch
     es = Elasticsearch()
@@ -49,7 +51,9 @@ Global timeout can be set when constructing the client (see
 :class:`~elasticsearch.Connection`'s ``timeout`` parameter) or on a per-request
 basis using ``request_timeout`` (float value in seconds) as part of any API
 call, this value will get passed to the ``perform_request`` method of the
-connection class::
+connection class:
+
+.. code-block:: python
 
     # only wait for 1 second, regardless of the client's default
     es.cluster.health(wait_for_status='yellow', request_timeout=1)
@@ -84,12 +88,16 @@ Response Filtering
 ~~~~~~~~~~~~~~~~~~
 
 The ``filter_path`` parameter is used to reduce the response returned by
-elasticsearch.  For example, to only return ``_id`` and ``_type``, do::
+elasticsearch.  For example, to only return ``_id`` and ``_type``, do:
+
+.. code-block:: python
 
     es.search(index='test-index', filter_path=['hits.hits._id', 'hits.hits._type'])
 
 It also supports the ``*`` wildcard character to match any field or part of a
-field's name::
+field's name:
+
+.. code-block:: python
 
     es.search(index='test-index', filter_path=['hits.hits._*'])