Update ConfigMap example in the Local Kubernetes Deployment documentation (#647)
Update ConfigMap example in the Local Kubernetes Deployment documentation (#647)

Updating this for https://github.com/world-federation-of-advertisers/cross-media-measurement/pull/643
world-federation-of-advertisers/cross-media-measurement,world-federation-of-advertisers/cross-media-measurement,world-federation-of-advertisers/cross-media-measurement