fixing tab groups

Author: schaffererin

articles/aks/custom-node-configuration.md

@@ -92,6 +92,8 @@ Create a `windowskubeletconfig.json` file with the following contents:
 }
 ```
 
+---
+
 #### OS configuration
 
 ### [Linux node pools](#tab/linux-node-pools)
@@ -115,6 +117,8 @@ Create a `linuxosconfig.json` file with the following contents:
 
 Not currently supported.
 
+---
+
 ### Create a new cluster using custom configuration files
 
 When creating a new cluster, you can use the customized configuration files created in the previous steps to specify the kubelet configuration, OS configuration, or both.
@@ -147,6 +151,8 @@ az aks nodepool add --name mynodepool1 --cluster-name myAKSCluster --resource-gr
 az aks nodepool add --name mynodepool1 --cluster-name myAKSCluster --resource-group myResourceGroup --os-type Windows --kubelet-config ./windowskubeletconfig.json
 ```
 
+---
+
 ### Other configurations
 
 The following settings can be used to modify other operating system settings: