Update CHANGELOG format
Update CHANGELOG format

chef-cookbooks/users,FlorentFlament/users,jordant/users,FlorentFlament/users,ongmingyang/users,justintime/users,chef-cookbooks/users,justintime/users,pielu/users,site5/cookbook-users,jordant/users,nickcharlton/users,iennae/users,wegtam/users,gsaslis/users,nickcharlton/users,gsaslis/users,nkadel-skyhook/nkadel-chef-users,RobertNorthard/users,iennae/users,ongmingyang/users,pielu/users,opscode-cookbooks/users,gleamicus/users,opscode-cookbooks/users,nkadel-skyhook/nkadel-chef-users,gleamicus/users,RobertNorthard/users,site5/cookbook-users,wegtam/users