Update README.md (#11063)

Add link to samples

sdk/cosmosdb/cosmos/README.md

@@ -209,7 +209,7 @@ While working with Cosmos DB, you might encounter transient failures caused by [
 
 ### More sample code
 
-Several samples are available to you in the SDK's GitHub repository. These samples provide example code for additional scenarios commonly encountered while working with Cosmos DB:
+[Several samples][cosmos_samples] are available to you in the SDK's GitHub repository. These samples provide example code for additional scenarios commonly encountered while working with Cosmos DB:
 
 - Database Operations
 - Container Operations
@@ -259,6 +259,7 @@ If you'd like to contribute to this library, please read the [contributing guide
 [cosmos_item]: https://docs.microsoft.com/azure/cosmos-db/databases-containers-items#azure-cosmos-items
 [cosmos_request_units]: https://docs.microsoft.com/azure/cosmos-db/request-units
 [cosmos_resources]: https://docs.microsoft.com/azure/cosmos-db/databases-containers-items
+[cosmos_samples]: ./samples
 [cosmos_sql_queries]: https://docs.microsoft.com/azure/cosmos-db/how-to-sql-query
 [cosmos_ttl]: https://docs.microsoft.com/azure/cosmos-db/time-to-live
 [npm]: https://www.npmjs.com/package/@azure/cosmos