Update toc.yml

Author: cynthn

articles/virtual-machines/windows/toc.yml

@@ -254,6 +254,7 @@
         href: reserved-vm-instance-size-flexibility.md
     - name: Spot VMs
       href: spot-vms.md
+      displayName: pre-empt, preempt
     - name: Previous generations
       href: ../sizes-previous-gen.md?toc=/azure/virtual-machines/windows/toc.json&bc=/azure/virtual-machines/windows/breadcrumb/toc.json
       displayName: D-series Ds-series A-series Basic