Update CHANGELOG format
Update CHANGELOG format

JasonGiedymin/dmg,turtlebender/dmg,juliandunn/dmg,opscode-cookbooks/dmg,jeroenj/dmg,wenzowski/dmg,chef-cookbooks/dmg,clakeb/dmg,irabinovitch/dmg,Sauraus/dmg,thomasmeeus/dmg,atlasdigital/dmg,protec-cookbooks/dmg,RoboticCheese/dmg