Broken link fixed

Author: pritamso

articles/aks/operator-best-practices-network.md

@@ -233,7 +233,7 @@ This article focused on network connectivity and security. For more information
 [contour]: https://github.com/heptio/contour
 [haproxy]: https://www.haproxy.org
 [traefik]: https://github.com/containous/traefik
-[barracuda-waf]: https://www.barracuda.com/products/webapplicationfirewall/models/5
+[barracuda-waf]: https://www.barracuda.com/products/webapplicationfirewall/models/
 
 <!-- INTERNAL LINKS -->
 [aks-concepts-network]: concepts-network.md
@@ -250,4 +250,4 @@ This article focused on network connectivity and security. For more information
 [advanced-networking]: configure-azure-cni.md
 [aks-configure-kubenet-networking]: configure-kubenet.md
 [concepts-node-selectors]: concepts-clusters-workloads.md#node-selectors
-[nodepool-upgrade]: use-multiple-node-pools.md#upgrade-a-node-pool
+[nodepool-upgrade]: use-multiple-node-pools.md#upgrade-a-node-pool