add doc to toc

Author: qpetraroia

articles/aks/TOC.yml

@@ -763,6 +763,8 @@
               href: keda-deploy-add-on-arm.md
             - name: Use Azure CLI
               href: keda-deploy-add-on-cli.md
+            - name: Securely scale your applications using the Kubernetes Event-driven Autoscaling (KEDA) add-on and workload identity
+              href: keda-workload-identity.md
             - name: Kubernetes Event-driven Autoscaler (KEDA) integrations
               href: keda-integrations.md
             - name: Troubleshoot Kubernetes Event-driven Autoscaler (KEDA)