Corrected heading level of "Registering and fetching lookups" section in docs.
Corrected heading level of "Registering and fetching lookups" section in docs.


django/django,monetate/django,django/django,manhhomienbienthuy/django,manhhomienbienthuy/django,apollo13/django,felixxm/django,manhhomienbienthuy/django,takis/django,monetate/django,django/django,rsalmaso/django,takis/django,pauloxnet/django,rsalmaso/django,apollo13/django,blighj/django,apollo13/django,felixxm/django,blighj/django,django/django,felixxm/django,rsalmaso/django,rsalmaso/django,pauloxnet/django,pauloxnet/django,apollo13/django,blighj/django,takis/django,monetate/django,felixxm/django,monetate/django,blighj/django,manhhomienbienthuy/django,takis/django,pauloxnet/django