Fixed #5068 -- Fixed error in docs/db-api.txt. Thanks, Collin Grady and SmileyChris

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6010 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/db-api.txt

@@ -207,14 +207,24 @@ the database until you explicitly call ``save()``.
 
 The ``save()`` method has no return value.
 
-Updating ``ForeignKey`` fields works exactly the same way; simply assign an
-object of the right type to the field in question::
+Saving ForeignKey and ManyToManyField fields
+--------------------------------------------
+
+Updating ``ForeignKey`` fields works exactly the same way as saving a normal
+field; simply assign an object of the right type to the field in question:: 
+
+    cheese_blog = Blog.objects.get(name="Cheddar Talk") 
+    entry.blog = cheese_blog 
+    entry.save() 
+
+Updating a ``ManyToManyField`` works a little differently; use the ``add()``
+method on the field to add a record to the relation::
 
     joe = Author.objects.create(name="Joe")
-    entry.author = joe
-    entry.save()
+    entry.authors.add(joe)
 
-Django will complain if you try to assign an object of the wrong type.
+Django will complain if you try to assign or add an object of the wrong type.
+You can find out more about `Queries over related objects`_ below.
 
 How Django knows to UPDATE vs. INSERT
 -------------------------------------