Merge pull request #270365 from wmwxwa/patch-8

Update introduction.md

Author: prmerger-automator[bot]

articles/cosmos-db/mongodb/introduction.md

@@ -14,7 +14,7 @@ ms.date: 09/12/2023
 
 [!INCLUDE[MongoDB](../includes/appliesto-mongodb.md)]
 
-[Azure Cosmos DB](../introduction.md) is a fully managed NoSQL and relational database for modern app development.
+[Azure Cosmos DB](../introduction.md) is a fully managed NoSQL, relational, and vector database for modern app development.
 
 Azure Cosmos DB for MongoDB makes it easy to use Azure Cosmos DB as if it were a MongoDB database. You can use your existing MongoDB skills and continue to use your favorite MongoDB drivers, SDKs, and tools by pointing your application to the connection string for your account using the API for MongoDB.