Update trigger.markdown (#16271)

Geolocation vs zone causes regular confusion.
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Dubh Ad 2021-01-24 00:05:29 +00:00 committed by GitHub
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@ -569,6 +569,13 @@ automation:
Geolocation trigger fires when an entity is appearing in or disappearing from a zone. Entities that are created by a [Geolocation](/integrations/geo_location/) platform support reporting GPS coordinates. Geolocation trigger fires when an entity is appearing in or disappearing from a zone. Entities that are created by a [Geolocation](/integrations/geo_location/) platform support reporting GPS coordinates.
Because entities are generated and removed by these platforms automatically, the entity id normally cannot be predicted. Instead, this trigger requires the definition of a `source`, which is directly linked to one of the Geolocation platforms. Because entities are generated and removed by these platforms automatically, the entity id normally cannot be predicted. Instead, this trigger requires the definition of a `source`, which is directly linked to one of the Geolocation platforms.
<div class='note'>
This isn't for use with `device_tracker` entities. For those look above at the `zone` trigger.
</div>
```yaml ```yaml
automation: automation:
trigger: trigger: