Update link to documentation
Update link to documentation

Previous link led to a maze. :/
jpadilla/django-rest-framework,kgeorgy/django-rest-framework,kgeorgy/django-rest-framework,tomchristie/django-rest-framework,tomchristie/django-rest-framework,jpadilla/django-rest-framework,tomchristie/django-rest-framework,jpadilla/django-rest-framework,kgeorgy/django-rest-framework