Update toc.yml

Author: ambientlight

articles/azure-maps/toc.yml

@@ -491,6 +491,8 @@ items:
       items:
       - name: Map control
         href: release-notes-map-control.md
+      - name: Indoor module
+        href: release-notes-indoor-module.md
   - name: Resource Manager template
     href: /azure/templates/microsoft.maps/accounts
   - name: Azure CLI