Fix wrong bind mount to access LE certs

docker-compose.override.yml

@@ -24,7 +24,7 @@ services:
         network_mode: none
         volumes:
           # Mount the folder which contains Traefik's `acme.json' file
-          - ${DATA_PATH}/traefik:/traefik:ro
+          - ${DATA_PATH}/traefik/letsencrypt:/traefik:ro
           # Mount mailcow's SSL folder
           - ./data/assets/ssl/:/output:rw
           # Mount docker socket to restart containers