[1.8.x] Corrected indentation of JsonResponse docs.
[1.8.x] Corrected indentation of JsonResponse docs.

Backport of 290145e6616b32a0b0c63f44b7c09d0a4af7dfd5 from master

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