Update README.md

Author: janvda

README.md

@@ -7,7 +7,7 @@ It consists of the following four docker containers (= TIG stack + nginx)
 1. [Telegraf](https://www.influxdata.com/time-series-platform/telegraf/) - agent for collecting and reporting metrics and events
 2. [Influxdb](https://www.influxdata.com/) - Time Series Database
 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).
+4. [nginx](http://nginx.org/en/docs/) - configured as reverse-proxyserver so that the http/https request becomes routed to grafana (port 30000).
 
 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 !