Refs -- Updated count of steps in model validation docs.
Follow-up to
@@ -193,7 +193,7 @@ fields that are currently deferred for this model.
Validating objects
==================
-There are three steps involved in validating a model:
+There are four steps involved in validating a model:
1. Validate the model fields - :meth:`Model.clean_fields()`
2. Validate the model as a whole - :meth:`Model.clean()`
