Update articles/iot-hub-device-update/toc.yml

Author: v-stsavell

articles/iot-hub-device-update/toc.yml

@@ -93,7 +93,7 @@ items:
   - name: Configure private endpoints
     href: configure-private-endpoints.md
     displayName: Azure CLI, az iot, az iot device-update
-  - name: Device Update for Azure real-time-operating-system
+  - name: Device Update for Azure Real Time Operating System
     href: device-update-azure-real-time-operating-system.md
   - name: Use Microsoft Connected Cache
     items: