Update README.md

Author: janvda

README.md

@@ -9,7 +9,7 @@ It consists of the following four docker containers (= TIG stack + nginx)
 3. [Grafana](https://grafana.com/) - create, explore and share dashboards
 4. [nginx](http://nginx.org/en/docs/) - configured as reverse-proxyserver so that the http/https request becomes routed to grafana (port 30000 port).
 
-The Grafana user interface can be accessed (login and password is `admin`) at port 80 of the host OS.  This also means that you can access it through the `public device URL` that you can find in your [BalenaCloud](https://www.balena.io/) dashboard.  In other words you can access your Grafana dashboards wherever you have internet access !
+The Grafana user interface can directly be accessed (login and password is `admin`) at port 80 of the host OS thanks to reverse-proxyserver ningx.  This also means that you can access it through the `public device URL` that you can find in your [BalenaCloud](https://www.balena.io/) dashboard.  In other words you can access your Grafana dashboards wherever you have internet access !
 
 Here below a screenshot of the `system metrics` dashboard that is also provisioned by this application ( file is `grafana\dashboards\system metrics.json`)