Update 03-create-cluster.md

[Dzhuneyt]

When running the command gcloud container clusters create my-cluster-name I get an error:

ERROR: (gcloud.container.clusters.create) ResponseError: code=400, message=Failed precondition when calling the ServiceConsumerManager: tenantmanager::XXX: Consumer XXX should enable service:container.googleapis.com before generating a service account.
com.google.api.tenant.error.TenantManagerException: Consumer XXX should enable service:container.googleapis.com before generating a service account.

I think this fixes it.

[Dzhuneyt]

@jamesward let me know if you need any changes on this.