Merge pull request #20924 from celestehorgan/fix-broken-links

Fix broken links identified by linkchecker

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

@@ -28,7 +28,7 @@ For information how to create a cluster with kubeadm once you have performed thi
 * 2 GB or more of RAM per machine (any less will leave little room for your apps)
 * 2 CPUs or more
 * Full network connectivity between all machines in the cluster (public or private network is fine)
-* Unique hostname, MAC address, and product_uuid for every node. See [here](#verify-the-mac-address-and-product-uuid-are-unique-for-every-node) for more details.
+* Unique hostname, MAC address, and product_uuid for every node. See [here](#verify-mac-address) for more details.
 * Certain ports are open on your machines. See [here](#check-required-ports) for more details.
 * Swap disabled. You **MUST** disable swap in order for the kubelet to work properly.
 
@@ -36,7 +36,7 @@ For information how to create a cluster with kubeadm once you have performed thi
 
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-## Verify the MAC address and product_uuid are unique for every node
+## Verify the MAC address and product_uuid are unique for every node {#verify-mac-address}
 
 * You can get the MAC address of the network interfaces using the command `ip link` or `ifconfig -a`
 * The product_uuid can be checked by using the command `sudo cat /sys/class/dmi/id/product_uuid`
@@ -305,4 +305,4 @@ If you are running into difficulties with kubeadm, please consult our [troublesh
 
 * [Using kubeadm to Create a Cluster](/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/)
 
-{{% /capture %}}
+{{% /capture %}}