Update lab9-bootstrapping-kubernetes-workers.md

docs/labs/kubernetes-the-hard-way/lab9-bootstrapping-kubernetes-workers.md

@@ -14,7 +14,7 @@ tags:
 This is a fork of the original ["Kubernetes the hard way"](https://github.com/kelseyhightower/kubernetes-the-hard-way) originally written by Kelsey Hightower (GitHub: kelseyhightower).
 Unlike the original that bases itself on Debian like distributions for the ARM64 architecture, this fork targets Enterprise Linux distributions such as Rocky Linux running on x86_64 architecture.
 
-# Bootstrapping the Kubernetes Worker Nodes
+# Lab 9: Bootstrapping the Kubernetes Worker Nodes
 
 In this lab you will bootstrap two Kubernetes worker nodes. The following components will be installed: [runc](https://github.com/opencontainers/runc), [container networking plugins](https://github.com/containernetworking/cni), [containerd](https://github.com/containerd/containerd), [kubelet](https://kubernetes.io/docs/admin/kubelet), and [kube-proxy](https://kubernetes.io/docs/concepts/cluster-administration/proxies).