update the README.md: fix dead links issue

Author: abbi-gaurav

README.md

@@ -87,12 +87,12 @@ Running various samples requires access to the Kyma environment. There are also
 | [HANA Cloud NodeJS API](./hana-nodejs/README.md)                               | This sample demonstrates how SAP HANA Cloud can be utilized within the Kyma runtime | -          |
 | [GeoServer for a geospatial middleware over HANA Cloud](./geoserver/README.md) | This sample provides a GeoServerinstance with the plugin for SAP HANA Connectivity  | -          |
 
-## MS SQL/Azure SQL
+## PostgreSQL
 
 | Name                                                                      | Description                                                                                                 | References                                                                     |
 | ------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
-| [Deploy a Go PostgreSQL API Endpoint in SAP BTP, Kyma Runtime](./api-postgresql-go/README.md)                    | This sample provides a Golang API endpoint for communication with an MS SQL database                        | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-api-mssql-golang.html) |
-| [Use and Seed SAP BTP PostgreSQL in SAP BTP, Kyma Runtime](./database-postgres/README.md)                             | This sample demonstrates how to containerize and deploy an MS SQL database                                   | [Tutorial](https://developers.sap.com/tutorials/cp-kyma-mssql-deployment.html) |
+| [Deploy a Go PostgreSQL API Endpoint in SAP BTP, Kyma Runtime](./api-postgresql-go/README.md)                    | This sample provides a Golang API endpoint for communication with a PostgreSQL database                        | |
+| [Use and Seed SAP BTP PostgreSQL in SAP BTP, Kyma Runtime](./database-postgres/README.md)                             | This sample demonstrates how to containerize and deploy a PostgreSQL database                                   | |
 
 ## Advanced Scenarios