Update articles/storage/files/files-reserve-capacity.md

Acro: the tier where for which -> the tier for which

Author: v-stsavell

articles/storage/files/files-reserve-capacity.md

@@ -72,7 +72,7 @@ Follow these steps to purchase a Reservation:
    |**Scope**   |  Indicates how many subscriptions can use the billing benefit associated with the Reservation. It also controls how the Reservation is applied to specific subscriptions. <br/><br/> If you select **Shared**, the Reservation discount is applied to Azure Files capacity in any subscription within your billing context. The billing context is based on how you signed up for Azure. For enterprise customers, the shared scope is the enrollment and includes all subscriptions within the enrollment. For pay-as-you-go customers, the shared scope includes all individual subscriptions with pay-as-you-go rates created by the account administrator.  <br/><br/>  If you select **Single subscription**, the Reservation discount is applied to Azure Files capacity in the selected subscription. <br/><br/> If you select **Single resource group**, the Reservation discount is applied to Azure Files capacity in the selected subscription and the selected resource group within that subscription. <br/><br/> You can change the Reservation scope after you purchase the Reservation.  |
    |**Subscription**  | The subscription that's used to pay for the Azure Files Reservation. The payment method on the selected subscription is used in charging the costs. The subscription must be one of the following types: <br/><br/>  Enterprise Agreement (offer numbers: MS-AZR-0017P or MS-AZR-0148P): For an Enterprise subscription, the charges are deducted from the enrollment's Azure Prepayment (previously called monetary commitment) balance or charged as overage. <br/><br/> Individual subscription with pay-as-you-go rates (offer numbers: MS-AZR-0003P or MS-AZR-0023P): For an individual subscription with pay-as-you-go rates, the charges are billed to the credit card or invoice payment method on the subscription.    |
    | **Region** | The region where the Reservation is in effect. |
-   | **Tier** | The tier where the for which the Reservation is in effect. Options include *Premium*, *Hot*, and *Cool*. |
+   | **Tier** | The tier for which the Reservation is in effect. Options include *Premium*, *Hot*, and *Cool*. |
    | **Redundancy** | The redundancy option for the Reservation. Options include *LRS*, *ZRS*, *GRS*, and *GZRS*. For more information about redundancy options, see [Azure Files redundancy](storage-files-planning.md#redundancy). |
    | **Billing frequency** | Indicates how often the account is billed for the Reservation. Options include *Monthly* or *Upfront*. |
    | **Size** | The amount of capacity to reserve. |