Update concepts-network.md

Author: pritamso

articles/aks/concepts-network.md

@@ -265,7 +265,7 @@ For more information on core Kubernetes and AKS concepts, see the following arti
 [support-policies]: support-policies.md
 [limit-egress]: limit-egress-traffic.md
 [k8s-ingress]: https://kubernetes.io/docs/concepts/services-networking/ingress/
-[nginx-ingress]: /azure/aks/ingress-basic
+[nginx-ingress]: ingress-basic.md
 [ip-preservation]: https://techcommunity.microsoft.com/t5/fasttrack-for-azure/how-client-source-ip-preservation-works-for-loadbalancer/ba-p/3033722#:~:text=Enable%20Client%20source%20IP%20preservation%201%20Edit%20loadbalancer,is%20the%20same%20as%20the%20source%20IP%20%28srjumpbox%29.
 [nsg-traffic]: ../virtual-network/network-security-group-how-it-works.md
 [azure-cni-aks]: /configure-azure-cni.md