Update sql-database-serverless.md

Author: oslake

articles/sql-database/sql-database-serverless.md

@@ -4,7 +4,7 @@ description: This article describes the new serverless compute tier and compares
 services: sql-database
 ms.service: sql-database
 ms.subservice: service
-ms.custom: 
+ms.custom:test 
 ms.devlang: 
 ms.topic: conceptual
 author: oslake