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[docs] Minor update to button mqtt (#32487)

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The `command_topic` is required
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Peter Kristensen 2024-04-30 08:03:13 +02:00 committed by GitHub
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commit 0d6db8aeba
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source/_integrations/button.mqtt.markdown
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@ -62,7 +62,7 @@ command_template:
type: template
command_topic:
description: The MQTT topic to publish commands to trigger the button.
required: false
required: true
type: string
device:
description: "Information about the device this button is a part of to tie it into the [device registry](https://developers.home-assistant.io/docs/en/device_registry_index.html). Only works when [`unique_id`](#unique_id) is set. At least one of identifiers or connections must be present to identify the device."