Wrong environment variable for linked service url

Hi, according to this page “https://docs.docker.com/docker-cloud/apps/service-links/” services linked to another service that has “global” role should have their docker cloud url accessible through an environment variable named like “SERVICE_DOCKERCLOUD_API_URL”. However when testing this those environment variables are not named like this but “SERVICE_TUTUM_API_URL”. Am I missing something here or is it a bug ?