[3.1.x] Fixed typo in docs/ref/models/querysets.txt.

Backport of 51e536178c from master

docs/ref/models/querysets.txt

@@ -859,8 +859,8 @@ duplicate values, use the ``all=True`` argument.
 of the type of the first ``QuerySet`` even if the arguments are ``QuerySet``\s
 of other models. Passing different models works as long as the ``SELECT`` list
 is the same in all ``QuerySet``\s (at least the types, the names don't matter
-as long as the types in the same order). In such cases, you must use the column
-names from the first ``QuerySet`` in ``QuerySet`` methods applied to the
+as long as the types are in the same order). In such cases, you must use the
+column names from the first ``QuerySet`` in ``QuerySet`` methods applied to the
 resulting ``QuerySet``. For example::
 
     >>> qs1 = Author.objects.values_list('name')