device_tracker.mqtt configuration.yaml is wrong (home-assistant#3583)

tsvi · fabaff · commit 9c25564272df · 2017-10-11T12:03:36.000+02:00
The topic to be looked up must be in quotes for the example to work.
diff --git a/source/_components/device_tracker.mqtt.markdown b/source/_components/device_tracker.mqtt.markdown
@@ -22,8 +22,8 @@ To use this device tracker in your installation, add the following to your `conf
 device_tracker:
   - platform: mqtt
     devices:
-      paulus_oneplus: /location/paulus
-      annetherese_n4: /location/annetherese
+      paulus_oneplus: 'location/paulus'
+      annetherese_n4: 'location/annetherese'
 ```
 
 Configuration variables:
