Restored 'Troublshoot fstab errors' to TOC

Author: v-miegge

articles/virtual-machines/troubleshooting/toc.yml

@@ -151,6 +151,8 @@
       href: https://support.microsoft.com/help/4091524
     - name: Recover LVM configured VMs and no boot 
       href: chroot-logical-volume-manager.md
+    - name: Troubleshoot fstab errors 
+      href: linux-virtual-machine-cannot-start-fstab-errors.md
     - name: Detailed SSH troubleshooting
       href: detailed-troubleshoot-ssh-connection.md
   - name: Application access issues