Updating author for billing doc

Author: SnehaGunda

articles/billing/billing-understand-cosmosdb-reservation-charges.md

@@ -2,7 +2,7 @@
 title: Understand how the reservation discount is applied to Azure Cosmos DB | Microsoft Docs
 description: Learn how reservation discount is applied to provisioned throughput (RU/s) in Azure Cosmos DB.
 services: cosmos-db
-author: rimman
+author: bandersmsft
 manager: kfile
 ms.service: cosmos-db
 ms.topic: conceptual