fixed broken link

Author: MGoedtel

articles/aks/upgrade.md

@@ -65,5 +65,5 @@ For more information what cluster operations may trigger specific upgrade events
 [ts-ip-limit]: /troubleshoot/azure/azure-kubernetes/error-code-publicipcountlimitreached
 [ts-quota-exceeded]: /troubleshoot/azure/azure-kubernetes/error-code-quotaexceeded
 [ts-subnet-full]: /troubleshoot/azure/azure-kubernetes/error-code-subnetisfull-upgrade
-[node-security-patches]: ./concepts-security.md#node-security-patches
+[node-security-patches]: ./concepts-vulnerability-management.md#worker-nodes
 [node-updates-kured]: ./node-updates-kured.md