README.md

@@ -22,8 +22,9 @@ $ ./deploy.sh services                 # deploy the docker role only
 $ ./deploy.sh services SINGLE_SERVICE  # deploy SINGLE_SERVICE Docker service only
 ```
 
-`SINGLE_SERVICE` should match one of the filenames in
-`roles/docker/tasks/services/**/*`, but without the `.yml` extension.
+`SINGLE_SERVICE` should match one of the service names in the `services`
+dictionary in `roles/docker/defaults/main.yml` (e.g. `gitea` or
+`data_coop_website`).
 
 ## Testing