Fixed typo in docs/ref/signals.txt.
Fixed typo in docs/ref/signals.txt.


googleinterns/django,adamchainz/django,simonw/django,auvipy/django,simonw/django,monetate/django,kaedroho/django,felixxm/django,pauloxnet/django,rsalmaso/django,simonw/django,django/django,dsanders11/django,solarissmoke/django,freakboy3742/django,manhhomienbienthuy/django,theo-l/django,koordinates/django,atul-bhouraskar/django,apollo13/django,elena/django,takis/django,dsanders11/django,claudep/django,blighj/django,monetate/django,takis/django,adamchainz/django,claudep/django,shaib/django,elena/django,MarkusH/django,pauloxnet/django,felixxm/django,ghickman/django,adamchainz/django,apollo13/django,dsanders11/django,auvipy/django,simonw/django,ghickman/django,MarkusH/django,apollo13/django,googleinterns/django,auvipy/django,googleinterns/django,wkschwartz/django,django/django,solarissmoke/django,rsalmaso/django,atul-bhouraskar/django,blighj/django,koordinates/django,georgemarshall/django,ghickman/django,shaib/django,takis/django,wkschwartz/django,adamchainz/django,elena/django,elena/django,koordinates/django,georgemarshall/django,atul-bhouraskar/django,dsanders11/django,django/django,shaib/django,apollo13/django,ghickman/django,solarissmoke/django,claudep/django,theo-l/django,blighj/django,django/django,solarissmoke/django,georgemarshall/django,monetate/django,kaedroho/django,MarkusH/django,pauloxnet/django,pauloxnet/django,kaedroho/django,auvipy/django,freakboy3742/django,freakboy3742/django,googleinterns/django,takis/django,atul-bhouraskar/django,rsalmaso/django,manhhomienbienthuy/django,felixxm/django,wkschwartz/django,monetate/django,blighj/django,wkschwartz/django,koordinates/django,shaib/django,rsalmaso/django,MarkusH/django,theo-l/django,claudep/django,manhhomienbienthuy/django,georgemarshall/django,felixxm/django,manhhomienbienthuy/django,theo-l/django