Update automation-trigger.markdown

'from' and 'to' don't work with use_trigger_values in condition

source/getting-started/automation-trigger.markdown

@@ -61,6 +61,8 @@ automation:
     platform: state
     entity_id: device_tracker.paulus, device_tracker.anne_therese
     # Optional 
+    state: 'xy'
+    # or (don't use that with condition: use_trigger_values)
     from: 'not_home'
     to: 'home'
     # If given, will trigger when state has been the to state for X time.