Fixed #20262 -- Replaced a reference to the wrong model in the CBV doc.

Thanks to mossplix for the review and bmispelon for the review.

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

@@ -12,7 +12,7 @@ editing content:
 
 .. note::
 
-    Some of the examples on this page assume that an ``Article`` model has been
+    Some of the examples on this page assume that an ``Author`` model has been
     defined as follows in ``myapp/models.py``::
 
         from django.core.urlresolvers import reverse