minor formatting edits in developer-concepts/Readme
minor formatting edits in developer-concepts/Readme

dalbhanj/kubernetes-aws-workshop,wombat/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop,dalbhanj/kubernetes-aws-workshop,arun-gupta/kubernetes-aws-workshop