[1.8.x] Added comma to improve readability in 1.7 release notes.
[1.8.x] Added comma to improve readability in 1.7 release notes.

Backport of 4f494ed0c60cdfc44b65aeea7f42f6b7245c03af from master

h4r5h1t/django-hauthy,pquentin/django,pquentin/django,pquentin/django,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy