doc: documentation enchancement for SpeedtestTracker service

diff --git a/docs/customservices.md b/docs/customservices.md
index 772a04af0eb1a64dc060246f6b86af52d8366584..47210fcf3b8f989ca13acf3e1d1acbf650d2f6f4 100644 (file)
--- a/docs/customservices.md
+++ b/docs/customservices.md
@@ -356,7 +356,17 @@ Configuration example:
 
 ## SpeedtestTracker
 
-For the SpeedtestTracker service you just need to define a entry with type `SpeedtestTracker`.
+This SpeedtestTracker service will show the download and upload speeds in Mbit/s and the ping in ms.
+To configure this service, you need to define the url of SpeedtestTracker running and an entry with type `SpeedtestTracker`.
+
+Configuration example:
+
+```yaml
+- name: "Speedtest Tracker"
+  type: "SpeedtestTracker"
+  url: "http://192.168.0.1:8765"
+  target: "_blank"
+```
 
 ## What's up Docker