Replace :: with .. code-block:: console.

dhermes · dhermes · commit bdcf04d57107 · 2016-10-20T17:04:00.000-07:00
Towards #2404.
diff --git a/packages/google-cloud-dns/README.rst b/packages/google-cloud-dns/README.rst
@@ -12,7 +12,7 @@ Python Client for Google Cloud DNS
 Quick Start
 -----------
 
-::
+.. code-block:: console
 
     $ pip install --upgrade google-cloud-dns
 
