Fixing improper syntax to my previous PR (#92)

* Fixing improper syntax to my previous PR, sorry!
* Also adding a line about referencing the backends docs.

Co-authored-by: Michal Čihař <michal@cihar.com>

docs/configuration/django.rst

@@ -82,7 +82,9 @@ or Django won't pick them when trying to authenticate the user.
 Don't miss ``django.contrib.auth.backends.ModelBackend`` if using ``django.contrib.auth``
 application or users won't be able to login by username / password method.
 
-Also, note that `'social_core.backends.google.GoogleOpenId'` has been deprecated.
+Also, note that ``social_core.backends.google.GoogleOpenId`` has been deprecated.
+
+For more documentation about setting backends to specific social applications, please see the :doc:`/backends/index`.
 
 
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