rearrange articles

Author: duongau

articles/firewall/toc.yml

@@ -8,17 +8,9 @@ items:
   - name: Well-Architected review of Azure Firewall
     href: /azure/architecture/framework/services/networking/azure-firewall?toc=/azure/firewall/toc.json&bc=/azure/firewall/breadcrumb/toc.json
   - name: SKU comparison
-    items:
-    - name: Overview
-      href: choose-firewall-sku.md
-    - name: Basic
-      href: basic-features.md
-    - name: Standard
-      href: features.md
-    - name: Premium
-      href: premium-features.md
-    - name: Preview features
-      href: firewall-preview.md
+    href: choose-firewall-sku.md
+  - name: Preview features
+    href: firewall-preview.md
 - name: Design & achitecture
   items:
   - name: Policy 
@@ -58,9 +50,14 @@ items:
 - name: Deploy
   items:
   - name: Firewall Basic
-    href: deploy-firewall-basic-portal.md
+    items:
+    - name: Features
+      href: basic-features.md
+    href: deploy-firewall-basic-portal-policy.md
   - name: Firewall Standard
     items:
+    - name: Features
+      href: features.md
     - name: Portal
       href: tutorial-firewall-deploy-portal-policy.md
     - name: PowerShell
@@ -71,6 +68,8 @@ items:
     items:
     - name: Overview
       href: premium-portal.md
+    - name: Features
+      href: premium-features.md
     - name: Portal
       href: premium-deploy.md
     - name: Cerficates