Update link for load-balancer in README.md (#472)

Author: daianamezdrea

README.md

@@ -65,7 +65,7 @@ The above parameters are:
 
 * `OS`: The operating system Kubernetes runs on.
 * `VERSION`: The version of Kubernetes to deploy.
-* `CONTAINER_RUNTIME`: The container runtime Kubernetes uses. Set this value to `docker` (officially supported) or `cri_containerd`. Advanced Kubernetes users can use `cri_containerd`, however this requires an increased understanding of Kubernetes, specifically when running applications in a HA cluster. To run a HA cluster and access your applications, an external load balancer is required in front of your cluster. Setting this up is beyond the scope of this module. For more information, see the Kubernetes [documentation](https://kubernetes-v1-4.github.io/docs/user-guide/load-balancer/).
+* `CONTAINER_RUNTIME`: The container runtime Kubernetes uses. Set this value to `docker` (officially supported) or `cri_containerd`. Advanced Kubernetes users can use `cri_containerd`, however this requires an increased understanding of Kubernetes, specifically when running applications in a HA cluster. To run a HA cluster and access your applications, an external load balancer is required in front of your cluster. Setting this up is beyond the scope of this module. For more information, see the Kubernetes [documentation](https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/).
 * `CNI_PROVIDER`: The CNI network to install. Set this value to `weave`, `flannel`, `calico` or `cilium`.
 * `CNI_PROVIDER_VERSION` The CNI version to use `calico` and `cilium` use this variable to reference the correct deployment file. Current version for `calico` is `3.6` and `cilium` is `1.4.3`
 * `ETCD_INITIAL_CLUSTER`: The server hostnames and IPs in the form of `hostname:ip`. When in production, include three, five, or seven nodes for etcd.