[1.6.x] Fixed #23785 -- Typo in docs/releases/1.6.txt
[1.6.x] Fixed #23785 -- Typo in docs/releases/1.6.txt

Backport of 091f5b5a4e from master

felixjimenez/django,felixjimenez/django,redhat-openstack/django,django-nonrel/django,felixjimenez/django,felixjimenez/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django,django-nonrel/django,redhat-openstack/django,django-nonrel/django