Merge pull request #48400 from dejanu/update/kubeadm_doc

update kubeadm doc

Author: k8s-ci-robot

content/en/docs/reference/setup-tools/kubeadm/kubeadm-join.md

@@ -7,7 +7,7 @@ content_type: concept
 weight: 30
 ---
 <!-- overview -->
-This command initializes a Kubernetes worker node and joins it to the cluster.
+This command initializes a new Kubernetes node and joins it to the existing cluster.
 
 <!-- body -->
 {{< include "generated/kubeadm_join/_index.md" >}}