[1.5.x] Added missing "in" in sentence.
[1.5.x] Added missing "in" in sentence.

Backport of 2c5c422d34 from master

bliti/django-nonrel-1.5,ccn-2m/django,ccn-2m/django,ccn-2m/django,bliti/django-nonrel-1.5,bliti/django-nonrel-1.5,ccn-2m/django