Fixes heroku deployment error
Fixes heroku deployment error

Specifically fixes this confusing error: ModuleNotFoundError: No module named "'config"
The single quotes are not required in the heroku config vars.
ryankanno/cookiecutter-django,luzfcb/cookiecutter-django,mistalaba/cookiecutter-django,luzfcb/cookiecutter-django,ryankanno/cookiecutter-django,Parbhat/cookiecutter-django-foundation,topwebmaster/cookiecutter-django,Parbhat/cookiecutter-django-foundation,trungdong/cookiecutter-django,trungdong/cookiecutter-django,trungdong/cookiecutter-django,mistalaba/cookiecutter-django,pydanny/cookiecutter-django,ad-m/cookiecutter-django,ad-m/cookiecutter-django,ryankanno/cookiecutter-django,luzfcb/cookiecutter-django,pydanny/cookiecutter-django,topwebmaster/cookiecutter-django,mistalaba/cookiecutter-django,luzfcb/cookiecutter-django,Parbhat/cookiecutter-django-foundation,pydanny/cookiecutter-django,Parbhat/cookiecutter-django-foundation,topwebmaster/cookiecutter-django,pydanny/cookiecutter-django,trungdong/cookiecutter-django,ad-m/cookiecutter-django,ad-m/cookiecutter-django,topwebmaster/cookiecutter-django,ryankanno/cookiecutter-django,mistalaba/cookiecutter-django