Fixed #16580 - Typo in docs/ref/models/querysets.txt

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16582 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/models/querysets.txt

@@ -672,7 +672,7 @@ This is also valid::
 ...and would also pull in the ``building`` relation.
 
 You can refer to any ``ForeignKey`` or ``OneToOneField`` relation in
-the list of fields passed to ``select_related``. Ths includes foreign
+the list of fields passed to ``select_related``. This includes foreign
 keys that have ``null=True`` (unlike the default ``select_related()``
 call). It's an error to use both a list of fields and the ``depth``
 parameter in the same ``select_related()`` call, since they are