Update docker-compose.yml example

docker-compose.yml.example

@@ -9,7 +9,7 @@ services:
       - "8081:8081"
     restart: always
     volumes:
-      - './relay/sled:/var/lib/aode-relay/sled'
+      - './relay:/var/lib/aode-relay'
     environment:
       - HOSTNAME=ap.example.com
       - DEBUG=true