Update install-kubeadm.md (SELinux note)

Added a note regarding the possibility of keeping SELinux enabled for advanced users at own risk.

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

Co-Authored-By: Jim Angel <[email protected]>

Clean up text from rebase

Revert "Clean up text from rebase"

This reverts commit ac82a7f.

Clean up rebase text

Author: jfcgaspar

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

@@ -210,12 +210,14 @@ yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
 systemctl enable --now kubelet
 ```
 
-  **Note:**
+  **Notes:**
 
   - Setting SELinux in permissive mode by running `setenforce 0` and `sed ...` effectively disables it.
     This is required to allow containers to access the host filesystem, which is needed by pod networks for example.
     You have to do this until SELinux support is improved in the kubelet.
 
+  - You can leave SELinux enabled if you know how to configure it but it may require settings that are not supported by kubeadm.
+    
 {{% /tab %}}
 {{% tab name="Container Linux" %}}
 Install CNI plugins (required for most pod network):