Add git commit message formatting to hacking guide
Add git commit message formatting to hacking guide

rxcomm/qtile,encukou/qtile,farebord/qtile,cortesi/qtile,qtile/qtile,kseistrup/qtile,nxnfufunezn/qtile,kopchik/qtile,aniruddhkanojia/qtile,StephenBarnes/qtile,jdowner/qtile,encukou/qtile,kynikos/qtile,jdowner/qtile,andrewyoung1991/qtile,andrewyoung1991/qtile,tych0/qtile,dequis/qtile,kiniou/qtile,soulchainer/qtile,cortesi/qtile,soulchainer/qtile,apinsard/qtile,w1ndy/qtile,EndPointCorp/qtile,rxcomm/qtile,kiniou/qtile,zordsdavini/qtile,de-vri-es/qtile,xplv/qtile,himaaaatti/qtile,xplv/qtile,EndPointCorp/qtile,frostidaho/qtile,w1ndy/qtile,kseistrup/qtile,tych0/qtile,zordsdavini/qtile,kynikos/qtile,nxnfufunezn/qtile,farebord/qtile,flacjacket/qtile,ramnes/qtile,himaaaatti/qtile,qtile/qtile,frostidaho/qtile,apinsard/qtile,dequis/qtile,ramnes/qtile,de-vri-es/qtile,flacjacket/qtile,StephenBarnes/qtile,kopchik/qtile,aniruddhkanojia/qtile