fix(docs): add missing network config to cloudflared compose override (#1048)

Co-authored-by: Jiralite <33201955+Jiralite@users.noreply.github.com>

fluxer_docs/docs/operator/get-started.md

@@ -157,6 +157,8 @@ Keep these defaults unless you know you need to change them:
         command: tunnel run --token ${CLOUDFLARED_TOKEN:?set CLOUDFLARED_TOKEN}
         depends_on:
           - caddy
+        networks:
+          - fluxer
     YAML
 
     export CLOUDFLARED_TOKEN='paste-your-tunnel-token-here'