Fix example Article.__str__ in Python 3
Fix example Article.__str__ in Python 3

django-fluent/django-fluent-comments,django-fluent/django-fluent-comments,django-fluent/django-fluent-comments,edoburu/django-fluent-comments,edoburu/django-fluent-comments,edoburu/django-fluent-comments,django-fluent/django-fluent-comments