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.for-traefik.yml

@@ -1,7 +1,7 @@
 # Continuwuity - Behind Traefik Reverse Proxy
 
 services:
-  homeserver:
+  continuwuity:
     image: "forgejo.ellis.link/continuwuation/continuwuity:latest"
     restart: unless-stopped
     command: /sbin/conduwuit