Update compression-cost-savings.md

Author: gahl-levy

articles/cosmos-db/mongodb/compression-cost-savings.md

@@ -1,7 +1,7 @@
 ---
 title: Improve performance and optimize costs with better data compression when upgrading to 4.0+
 description: Learn how upgrading your API for MongoDB account to versions 4.0+ saves you money on queries and storage.
-author: gahl.levy
+author: gahl-levy
 ms.service: cosmos-db
 ms.topic: how-to
 ms.date: 09/06/2022