docs: Use continuwuity instead of homeserver for the docker service

This commit replaces all references of `homeserver` to `continuwuity`

The `docker-compose.yml` file also receives 2-space linting

docs/public/deploying/docker-compose.with-caddy-labels.yml

@@ -15,7 +15,7 @@ services:
       - ./caddy-data:/data
     restart: unless-stopped
 
-  homeserver:
+  continuwuity:
     image: "forgejo.ellis.link/continuwuation/continuwuity:latest"
     restart: unless-stopped
     command: /sbin/conduwuit