Add link to API docs

Author: pauljwil

alerts-detectors-notifications/create-detectors-for-alerts.rst

@@ -216,7 +216,7 @@ Display custom properties
 
 If you are creating a detector using the Splunk Observability Cloud API, you can convert custom properties to dimensions using the ``promote()`` method.
 
-By converting a custom property to a dimension, you can display it in an alert message. To learn more, see the :new-page:`Developer documentation for the promote method <https://dev.splunk.com/observability/docs/signalflow/methods/promote_stream_method/>`.
+By converting a custom property to a dimension, you can display it in an alert message. To learn more, see the :new-page:`Developer documentation <https://dev.splunk.com/observability/docs/signalflow/methods/promote_stream_method/>` and the :ref:`API reference documentation <https://dev.splunk.com/observability/reference/api/detectors/latest>` for the ``promote()`` method.
 
 .. _alert-recipients: