update example MENU_VERSION

Author: rjocoleman

docker-compose.yml.example

@@ -5,7 +5,7 @@ services:
     image: ghcr.io/netbootxyz/netbootxyz
     container_name: netbootxyz
     environment:
-      - MENU_VERSION=2.0.47 # optional
+      - MENU_VERSION=2.0.84 # optional
       - NGINX_PORT=80 # optional
       - WEB_APP_PORT=3000 # optional
       - DHCP_RANGE_START=192.168.0.1 # optional, enables DHCP Proxy mode. set to your network's DHCP range first IP