permalink docs import mistake

[TomV]

The first example has:

from django.db import models

@models.permalink
def get_absolute_url(self):

which is fine. But

from django.db.models import permalink

@models.permalink
def get_absolute_url(self):

won't work. Patch makes consistent with first example.

[Łukasz Rekucki]

Good catch.

[Luke Plant]

(In [13666]) Fixed #14189 - permalink docs import mistake

Thanks to 7times9 for report and patch.

[Luke Plant]

(In [13667]) Fixed #14189 - permalink docs import mistake

Thanks to 7times9 for report and patch.

Backport of [13666] from trunk