Update docker-compose.yml

Author: lerndevops

docker/swarm/spring-boot-mongo-example/docker-compose.yml

@@ -29,5 +29,5 @@ services:
     ports: 
       - "27017:27017"
 #    volumes:
-#      - /data:/data/db
-#      - /data-bkp:/data/bkp
+#      - data:/data/db
+#      - data-bkp:/data/bkp