Update alert-manager.rst

Author: aantn

docs/configuration/alertmanager-integration/alert-manager.rst

@@ -5,8 +5,6 @@ This guide shows how to send alerts from an existing AlertManager to Robusta in
 
 If your AlertManager is in a different cluster, refer to :ref:`External Prometheus`.
 
-For configuring metric querying and advanced Prometheus settings, see :doc:`/configuration/metric-providers-in-cluster`.
-
 Send Alerts to Robusta
 ============================