Typo fix in README.
Typo fix in README.

shubhamdipt/django-object-tools,sky-chen/django-object-tools,felixxm/django-object-tools,sky-chen/django-object-tools,slafs/django-object-tools,praekelt/django-object-tools,felixxm/django-object-tools,praekelt/django-object-tools,shubhamdipt/django-object-tools