Update toc.yml

Author: ryanberg-aquent

support/azure/virtual-machines/windows/toc.yml

@@ -95,7 +95,9 @@ items:
       href: ../../../windows-server/installing-updates-features-roles/troubleshoot-windows-installation-error.md?context=/troubleshoot/azure/virtual-machines/windows/context/context
     - name: Error code 0x80072f8f
       href: ../../../windows-server/installing-updates-features-roles/troubleshoot-windows-update-error-0x80072f8f.md?context=/troubleshoot/azure/virtual-machines/windows/context/context
-  
+    - name: Error code 0x80070bc9
+      href: ../../../windows-server/installing-updates-features-roles/troubleshoot-windows-update-error-0x80070bc9.md?context=/troubleshoot/azure/virtual-machines/windows/context/context
+
 - name: Uploading a VHD to Azure
   items:
   - name: Uploading a VHD to Azure