Corrected admin.E023 message in docs.
Corrected admin.E023 message in docs.

ghickman/django,takis/django,manhhomienbienthuy/django,apollo13/django,apollo13/django,felixxm/django,auvipy/django,dsanders11/django,apollo13/django,solarissmoke/django,django/django,rsalmaso/django,manhhomienbienthuy/django,ghickman/django,ghickman/django,django/django,rsalmaso/django,shaib/django,monetate/django,monetate/django,takis/django,shaib/django,manhhomienbienthuy/django,pauloxnet/django,rsalmaso/django,dsanders11/django,MarkusH/django,freakboy3742/django,solarissmoke/django,MarkusH/django,manhhomienbienthuy/django,blighj/django,pauloxnet/django,auvipy/django,auvipy/django,django/django,pauloxnet/django,monetate/django,blighj/django,blighj/django,solarissmoke/django,atul-bhouraskar/django,dsanders11/django,shaib/django,ghickman/django,apollo13/django,blighj/django,MarkusH/django,rsalmaso/django,takis/django,MarkusH/django,solarissmoke/django,auvipy/django,felixxm/django,dsanders11/django,atul-bhouraskar/django,shaib/django,monetate/django,atul-bhouraskar/django,freakboy3742/django,felixxm/django,felixxm/django,freakboy3742/django,django/django,pauloxnet/django,atul-bhouraskar/django,takis/django