[1.5.x] Fixed #19283 -- Fixed typo in imports in CBV docs.

Backport of 00ff69a from master.

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

@@ -16,8 +16,8 @@ editing content:
     has been defined. For these cases we assume the following has been defined
     in `myapp/models.py`::
 
-        from django import models
         from django.core.urlresolvers import reverse
+        from django.db import models
 
         class Author(models.Model):
             name = models.CharField(max_length=200)

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

@@ -90,8 +90,8 @@ class:
 .. code-block:: python
 
     # models.py
-    from django import models
     from django.core.urlresolvers import reverse
+    from django.db import models
 
     class Author(models.Model):
         name = models.CharField(max_length=200)
@@ -160,8 +160,8 @@ you can use a custom :class:`ModelForm` to do this. First, add the
 foreign key relation to the model::
 
     # models.py
-    from django import models
     from django.contrib.auth import User
+    from django.db import models
 
     class Author(models.Model):
         name = models.CharField(max_length=200)