[1.5.x] Fixed typo in 1.5 release notes; thanks Jonas Obrist.
[1.5.x] Fixed typo in 1.5 release notes; thanks Jonas Obrist.

Backport of bb7f34d619bf from master.

ccn-2m/django,hasadna/django,hasadna/django,hasadna/django,imtapps/django-imt-fork,ccn-2m/django,bliti/django-nonrel-1.5,alx-eu/django,imtapps/django-imt-fork,ccn-2m/django,imtapps/django-imt-fork,bliti/django-nonrel-1.5,alx-eu/django,bliti/django-nonrel-1.5,alx-eu/django,alx-eu/django,ccn-2m/django