Merge pull request #5438 from lcfang/patch-53

Update install-kubeadm.md

docs/setup/independent/install-kubeadm.md

@@ -79,7 +79,7 @@ You will install these packages on all of your machines:
 **Note:** If you already have kubeadm installed, you should do a `apt-get update &&
 apt-get upgrade` or `yum update` to get the latest version of kubeadm. See the
 kubeadm release notes if you want to read about the different [kubeadm
-releases](https://github.com/kubernetes/kubeadm/blob/master/CHANGELOG.md)
+releases](https://github.com/kubernetes/kubeadm/blob/master/CHANGELOG.md).
 
 For each machine:
 
@@ -119,7 +119,7 @@ For each machine:
 The kubelet is now restarting every few seconds, as it waits in a crashloop for
 kubeadm to tell it what to do.
 
-  Note: Disabling SELinux by running `setenforce 0` is required to allow
+**Note:** Disabling SELinux by running `setenforce 0` is required to allow
 containers to access the host filesystem, which is required by pod networks for
 example. You have to do this until SELinux support is improved in the kubelet.