Added link to contributing docs in deprecation policy.
Added link to contributing docs in deprecation policy.

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