chore(misc/loop): gnoweb host www.gno.land (gnolang#2136)

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<details><summary>Contributors' checklist...</summary>

- [ ] Added new tests, or not needed, or not feasible
- [ ] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [ ] Updated the official documentation or not needed
- [ ] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
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misc/loop/docker-compose.production.yml

@@ -62,7 +62,7 @@ services:
       com.centurylinklabs.watchtower.enable: "true"
       traefik.enable: "true"
       traefik.http.routers.gnoweb.entrypoints: "web,websecure"
-      traefik.http.routers.gnoweb.rule: "Host(`gno.land`)"
+      traefik.http.routers.gnoweb.rule: "Host(`gno.land`) || Host(`www.gno.land`)"
       traefik.http.routers.gnoweb.tls: "true"
       traefik.http.routers.gnoweb.tls.certresolver: "le"