Update deprecation notice

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cc: @dominicbetts

Author: dominicbetts

articles/iot-central/core/howto-query-with-rest-api.md

@@ -28,8 +28,8 @@ Every IoT Central REST API call requires an authorization header. To learn more,
 
 For the reference documentation for the IoT Central REST API, see [Azure IoT Central REST API reference](/rest/api/iotcentral/).
 
-> [!NOTE]
-> The support for property queries is being deprecated from the IoT Central REST API and we will soon remove this from the existing API releases. 
+> [!IMPORTANT]
+> Support for property queries is now deprecated in the IoT Central REST API and will be removed from the existing API releases. 
 
 [!INCLUDE [iot-central-postman-collection](../../../includes/iot-central-postman-collection.md)]