Add doc to TOC

Author: fcabreramsft

articles/iot-edge/TOC.yml

@@ -53,6 +53,8 @@
       href: how-to-access-dtpm.md
     - name: GPU acceleration
       href: gpu-acceleration.md
+    - name: Shared folders
+      href: how-to-share-windows-folder-to-vm.md
   - name: Develop and debugging
     href: tutorial-develop-for-linux-on-windows.md
   - name: Troubleshoot