not needed

Author: spelluru

articles/event-grid/toc.yml

@@ -96,8 +96,12 @@
   items:
   - name: Event Grid concepts
     href: concepts.md
-  - name: Security and authentication
-    href: security-authentication.md
+  - name: Security 
+    items: 
+    - name: Authentication
+      href: security-authentication.md
+    - name: Authorization 
+      href: security-authorization.md
   - name: Delivery and retry
     href: delivery-and-retry.md
   - name: Event filtering