Update kube-jupyterhub.md

kube-jupyterhub.md

@@ -16,7 +16,7 @@ mkdir -p /root/bin
 cp linux-amd64/helm /root/bin
 ```
 
-# Check installation on Fedora-CoreOS-35
+### Check installation on Fedora-CoreOS-35
 The default helm installed by magnum:
 ```bash
 echo $PATH