Updated Using Netbox Plugins (markdown)

Using-Netbox-Plugins.md

@@ -45,6 +45,8 @@ version: '3.4' # This is NOT the version of NetBox! No need to adjust :)
 services:
   netbox:
     image: netbox:latest-plugins
+    ports:
+      - 8000:8080
     build:
       context: .
       dockerfile: Dockerfile-Plugins