Added additional info on RELEASING.md
Added additional info on RELEASING.md

dlorenc/minikube,kubernetes/minikube,endocode/minikube,skipjaq/minikube,warmchang/minikube,dlorenc/minikube,warmchang/minikube,cu12/minikube,aaron-prindle/minikube,abbytiz/minikube,warmchang/minikube,skipjaq/minikube,skipjaq/minikube,mikegrass/minikube,dongsupark/minikube,r2d4/minikube,endocode/minikube,dims/minikube,warmchang/minikube,dongsupark/minikube,r2d4/minikube,cu12/minikube,dongsupark/minikube,mikegrass/minikube,dlorenc/minikube,dalehamel/minikube,endocode/minikube,abbytiz/minikube,kubernetes/minikube,dalehamel/minikube,aaron-prindle/minikube,abbytiz/minikube,kubernetes/minikube,kubernetes/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,cu12/minikube,dlorenc/minikube,warmchang/minikube,dalehamel/minikube,r2d4/minikube,dlorenc/minikube,dims/minikube,dims/minikube,dlorenc/minikube,kubernetes/minikube,aaron-prindle/minikube,dlorenc/minikube,warmchang/minikube,mikegrass/minikube