fix relative link

Author: zioproto

articles/aks/azure-cni-overlay.md

@@ -97,7 +97,7 @@ Azure CNI Overlay has the following limitations:
 - You can't use Application Gateway as an Ingress Controller (AGIC) for an overlay cluster.
 - Windows Server 2019 node pools are not supported for overlay.
 - Traffic from host network pods is not able to reach Windows overlay pods.
-- You can't use [DCsv2-series](/azure/virtual-machines/dcv2-series) virtual machines in node pools. In case you need Confidential Computing you must use [DCasv5 or DCadsv5-series confidential VMs](https://learn.microsoft.com/en-us/azure/virtual-machines/dcasv5-dcadsv5-series).
+- You can't use [DCsv2-series](/azure/virtual-machines/dcv2-series) virtual machines in node pools. In case you need Confidential Computing you must use [DCasv5 or DCadsv5-series confidential VMs](/azure/virtual-machines/dcasv5-dcadsv5-series).
 
 ## Install the aks-preview Azure CLI extension