Updated supported django-celery version in docs
Updated supported django-celery version in docs

holgerd77/django-dynamic-scraper,holgerd77/django-dynamic-scraper,DeanSherwin/django-dynamic-scraper,DeanSherwin/django-dynamic-scraper,DeanSherwin/django-dynamic-scraper,holgerd77/django-dynamic-scraper,DeanSherwin/django-dynamic-scraper,holgerd77/django-dynamic-scraper