Fix hook function names.
Fix hook function names.

The names were being rendered into the online docs and
causing confusion.

ammaraskar/gunicorn,1stvamp/gunicorn,alex/gunicorn,urbaniak/gunicorn,mvaled/gunicorn,wong2/gunicorn,zhoucen/gunicorn,ephes/gunicorn,pschanely/gunicorn,mvaled/gunicorn,pschanely/gunicorn,MrKiven/gunicorn,prezi/gunicorn,z-fork/gunicorn,jamesblunt/gunicorn,wong2/gunicorn,urbaniak/gunicorn,1stvamp/gunicorn,prezi/gunicorn,alex/gunicorn,gtrdotmcs/gunicorn,zhoucen/gunicorn,malept/gunicorn,wong2/gunicorn,harrisonfeng/gunicorn,WSDC-NITWarangal/gunicorn,malept/gunicorn,urbaniak/gunicorn,alex/gunicorn,1stvamp/gunicorn,prezi/gunicorn,keakon/gunicorn,jamesblunt/gunicorn,ccl0326/gunicorn,tempbottle/gunicorn,zhoucen/gunicorn,elelianghh/gunicorn,mvaled/gunicorn,pschanely/gunicorn,ccl0326/gunicorn,tejasmanohar/gunicorn,gtrdotmcs/gunicorn,malept/gunicorn,beni55/gunicorn,GitHublong/gunicorn,gtrdotmcs/gunicorn,ccl0326/gunicorn,jamesblunt/gunicorn