[Sumadija] doc addresses

sumadija/sumadijamoxx/nginxproxymanager12/README.md

@@ -9,7 +9,7 @@ VMID: 102
 ## 🌐 Connectivity
 - **Local IP:** `192.168.7.102`
 - **Internal Port:** `80`
-- **External/Proxy URL:** `[N/A - Acts as proxy]`
+- **External/Proxy URL:** `https://sumadija.dmz.rs`
 - **Access Type:** Local / Public (via proxy)
 
 ## 🛠️ Details