Merge pull request #177551 from Oury-MSFT/patch-16

changes the first paragraph and removed the link indexing in Azure Co…

Author: PRMerger5

articles/cosmos-db/mongodb/mongodb-indexing.md

@@ -13,7 +13,7 @@ ms.custom: devx-track-js
 # Manage indexing in Azure Cosmos DB's API for MongoDB
 [!INCLUDE[appliesto-mongodb-api](../includes/appliesto-mongodb-api.md)]
 
-Azure Cosmos DB's API for MongoDB takes advantage of the core index-management capabilities of Azure Cosmos DB. This article focuses on how to add indexes using Azure Cosmos DB's API for MongoDB. You can also read an [overview of indexing in Azure Cosmos DB](../index-overview.md) that's relevant across all APIs.
+Azure Cosmos DB's API for MongoDB takes advantage of the core index-management capabilities of Azure Cosmos DB. This article focuses on how to add indexes using Azure Cosmos DB's API for MongoDB. Indexes are specialized data structures that make querying your data roughly an order of magnitude faster.
 
 ## Indexing for MongoDB server version 3.6 and higher