Update Nest integration ring event type documentation

Author: allenporter

source/_integrations/nest.markdown

@@ -365,7 +365,7 @@ All doorbells and cameras support event entities. See the [Event](https://www.ho
 There are two classes of event entities that are available based on the above camera features:
 
 - `motion` for cameras that support any of the event types `camera_motion`, `camera_person`, or `camera_sound`
-- `doorbell` for all cameras that are doorbells and support `doorbell_chime` events
+- `doorbell` for all cameras that are doorbells and support `ring` events
 
 Nest event entities are updated immediately when an event message is received
 without waiting for any media to be fetched. See Device Triggers for media support.
@@ -385,6 +385,8 @@ event entity for immediate notifications without media.
 
 This is an example of what the `nest_event` payload looks like for a Device Trigger that you can use to power automations.
 
+Device triggers use the `doorbell_chime` event, not `ring`.
+
 ```json
 {
     "event_type": "nest_event",