Fixed some ReST errors in docs.

    class City(models.Model):

        # ...

        pass

    class Person(models.Model):

        # ...

.. versionchanged:: 1.2

You can also refer to the reverse direction of a

:class:`~django.db.models.OneToOneField`` in the list of fields passed to

:class:`~django.db.models.OneToOneField` in the list of fields passed to

``select_related`` — that is, you can traverse a

:class:`~django.db.models.OneToOneField` back to the object on which the field

is defined. Instead of specifying the field name, use the :attr:`related_name

    >>> pizzas = Pizza.objects.prefetch_related('toppings')

    >>> [list(pizza.toppings.filter(spicy=True)) for pizza in pizzas]

...then the fact that `pizza.toppings.all()` has been prefetched will not help

...then the fact that ``pizza.toppings.all()`` has been prefetched will not help

you - in fact it hurts performance, since you have done a database query that

you haven't used. So use this feature with caution!