Update toc.yml

Added the new article to TOC

Author: Connected-Seth

articles/event-grid/toc.yml

@@ -77,8 +77,10 @@ items:
             href: oauth-json-web-token-authentication.md
           - name: MQTT client authentication using certificates
             href: mqtt-client-certificate-authentication.md        
-          - name: JWT authentication and RBAC authorization for clients with Microsoft Entra identity
+          - name: Microsoft Entra JWT authentication and RBAC authorization for clients 
             href: mqtt-client-microsoft-entra-token-and-rbac.md
+          - name: OAuth 2.0 JSON Web Token authentication and authorization for clients 
+            href: mqtt-client-custom-jwt.md
           - name: Transport Layer Security connection with MQTT broker
             href: mqtt-transport-layer-security-flow.md
         - name: Reliability