fix: /config gives the state of caddy.service with the installed Caddy, for the Router Manager's Web page.

README.md

@@ -1006,7 +1006,7 @@ when it ended and why, and each refused ticket or shell with the reason.
 | `wireguard` | The public key and port of `wg0`, and each peer's public key, endpoint, allowed IPs, handshake age and traffic; no private or preshared key |
 | `docker` | `docker.exposed_ports` and the rules of the `VPN-ROUTER-DOCKER` chain |
 | `postgresql` | `clusters`: each PostgreSQL cluster of `pg_lsclusters` with its version, name, port, status and data directory, and for one that is online its `settings`: `server_version`, `listen_addresses`, `port`, `max_connections`, `shared_buffers`, `effective_cache_size`, `work_mem`, `password_encryption`, `ssl` and `timezone`; `null` when `pg_lsclusters` fails |
-| `caddy` | The installed Caddy: `version`, and `source`, `upstream` once Caddy's repository is configured and `ubuntu` otherwise; `null` when Caddy is not installed |
+| `caddy` | The installed Caddy: `version`, `source`, `upstream` once Caddy's repository is configured and `ubuntu` otherwise, and `service`, the state of `caddy.service`; `null` when Caddy is not installed |
 
 ### The /postgresql page