Per subscription per region limit

2500 as limit per subscription per region, not only per region.

Author: juanandmsft

includes/azure-virtual-machine-scale-sets-limits.md

@@ -9,5 +9,5 @@ ms.author: jushim
 | --- | --- |
 | Maximum number of VMs in a scale set |1,000 |
 | Maximum number of VMs based on a custom VM image in a scale set|600 |
-| Maximum number of scale sets in a region |2,500 |
+| Maximum number of scale sets per subscription per region |2,500 |
 | Maximum number of nodes supported in VMSS for IB cluster |100 |