[1.6.x] Fixed inaccuracies in generic mixins documentation.

Backport of a5391db76a from master.

docs/ref/class-based-views/generic-editing.txt

@@ -111,6 +111,12 @@ CreateView
         creating objects for the example ``Author`` model would cause the
         default ``template_name`` to be ``'myapp/author_create_form.html'``.
 
+    .. attribute:: object
+
+        When using ``CreateView`` you have access to ``self.object``, which is
+        the object being created. If the object hasn't been created yet, the
+        value will be ``None``.
+
     **Example myapp/views.py**::
 
         from django.views.generic.edit import CreateView
@@ -162,6 +168,11 @@ UpdateView
         updating objects for the example ``Author`` model would cause the
         default ``template_name`` to be ``'myapp/author_update_form.html'``.
 
+    .. attribute:: object
+
+        When using ``UpdateView`` you have access to ``self.object``, which is
+        the object being updated.
+
     **Example myapp/views.py**::
 
         from django.views.generic.edit import UpdateView

docs/ref/class-based-views/mixins-editing.txt

@@ -12,7 +12,7 @@ The following mixins are used to construct Django's editing views:
 .. note::
 
     Examples of how these are combined into editing views can be found at
-    the documentation on ``Generic editing views``.
+    the documentation on :doc:`/ref/class-based-views/generic-editing`.
 
 FormMixin
 ---------
@@ -112,9 +112,7 @@ ModelFormMixin
     mixin have access to the
     :attr:`~django.views.generic.detail.SingleObjectMixin.model` and
     :attr:`~django.views.generic.detail.SingleObjectMixin.queryset` attributes,
-    describing the type of object that the ``ModelForm`` is manipulating. The
-    view also provides ``self.object``, the instance being manipulated. If the
-    instance is being created, ``self.object`` will be ``None``.
+    describing the type of object that the ``ModelForm`` is manipulating.
 
     **Mixins**
 
@@ -218,6 +216,10 @@ ProcessFormView
         The ``PUT`` action is also handled and just passes all parameters
         through to :meth:`post`.
 
+
+DeletionMixin
+-------------
+
 .. class:: django.views.generic.edit.DeletionMixin
 
     Enables handling of the ``DELETE`` http action.