Merge pull request #21432 from aanm/update-cilium-docs

Update Cilium related docs

content/en/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm.md

@@ -313,12 +313,11 @@ kubectl apply -f https://docs.projectcalico.org/v3.14/manifests/calico.yaml
 {{% /tab %}}
 
 {{% tab name="Cilium" %}}
-For Cilium to work correctly, you must pass `--pod-network-cidr=10.217.0.0/16` to `kubeadm init`.
 
 To deploy Cilium you just need to run:
 
 ```shell
-kubectl create -f https://raw.githubusercontent.com/cilium/cilium/v1.6/install/kubernetes/quick-install.yaml
+kubectl create -f https://raw.githubusercontent.com/cilium/cilium/v1.8/install/kubernetes/quick-install.yaml
 ```
 
 Once all Cilium Pods are marked as `READY`, you start using your cluster.