Update instruction for running on GCE VM
Update instruction for running on GCE VM

janetkuo/marketplace-k8s-app-tools,janetkuo/marketplace-k8s-app-tools,GoogleCloudPlatform/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,GoogleCloudPlatform/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools