Docs: fix broken upgrade link to alerting (#70415)

docs/sources/breaking-changes/breaking-changes-v10-0.md

@@ -76,7 +76,7 @@ Grafana legacy alerting (dashboard alerts) has been deprecated since Grafana v9.
 
 #### Migration path
 
-The new Grafana Alerting was introduced in Grafana 8 and is a superset of legacy alerting. Learn how to migrate your alerts in the [Upgrade Alerting documentation]({{< relref "../alerting/migrating-alerts/" >}}).
+The new Grafana Alerting was introduced in Grafana 8 and is a superset of legacy alerting. Learn how to migrate your alerts in the [Upgrade Alerting documentation]({{< relref "../alerting/set-up/migrating-alerts/" >}}).
 
 ### API keys are migrating to service accounts