corrected docs for heroku update commands
corrected docs for heroku update commands

Faisalawanisee/heroku,gregburek/heroku,duypq94/heroku,duypq94/heroku,gregburek/heroku,dickeyxxx/heroku,vcgato29/heroku,rkh/heroku,vcgato29/heroku,sancopanco/heroku,vcgato29/heroku,macedo/heroku,rkh/heroku,duypq94/heroku,macedo/heroku,gregburek/heroku,dickeyxxx/heroku,macedo/heroku,greeca0204/heroku,sancopanco/heroku,sancopanco/heroku,Faisalawanisee/heroku,greeca0204/heroku,greeca0204/heroku,Faisalawanisee/heroku,rkh/heroku,dickeyxxx/heroku