Fixed #26595 -- Removed unnecessary save() in one_to_one.txt example.

docs/topics/db/examples/one_to_one.txt

@@ -140,7 +140,6 @@ This of course works in reverse::
 Add a Waiter to the Restaurant::
 
     >>> w = r.waiter_set.create(name='Joe')
-    >>> w.save()
     >>> w
     <Waiter: Joe the waiter at Demon Dogs the restaurant>