Merge pull request #50078 from Drewm3/patch-17

Add qualifier for VM size flexibility

Author: PRMerger8

articles/virtual-machines/linux/quotas.md

@@ -60,7 +60,7 @@ Premium Storage Managed Disks                  5    10000
 ```
 
 ## Reserved VM Instances
-Reserved VM Instances, which are scoped to a single subscription, will add a new aspect to the vCPU quotas. These values describe the number of instances of the stated size that must be deployable in the subscription. They work as a placeholder in the quota system to ensure that quota is reserved to ensure Azure reservations are deployable in the subscription. For example, if a specific subscription has 10 Standard_D1 reservations the usages limit for Standard_D1 reservations will be 10. This will cause Azure to ensure that there are always at least 10 vCPUs available in the Total Regional vCPUs quota to be used for Standard_D1 instances and there are at least 10 vCPUs available in the Standard D Family vCPU quota to be used for Standard_D1 instances.
+Reserved VM Instances, which are scoped to a single subscription without VM size flexibility, will add a new aspect to the vCPU quotas. These values describe the number of instances of the stated size that must be deployable in the subscription. They work as a placeholder in the quota system to ensure that quota is reserved to ensure Azure reservations are deployable in the subscription. For example, if a specific subscription has 10 Standard_D1 reservations the usages limit for Standard_D1 reservations will be 10. This will cause Azure to ensure that there are always at least 10 vCPUs available in the Total Regional vCPUs quota to be used for Standard_D1 instances and there are at least 10 vCPUs available in the Standard D Family vCPU quota to be used for Standard_D1 instances.
 
 If a quota increase is required to either purchase a Single Subscription RI, you can [request a quota increase](https://docs.microsoft.com/azure/azure-supportability/resource-manager-core-quotas-request) on your subscription.