Add FAQ link

Author: Bharathi Selvaraj

articles/energy-data-services/how-to-enable-eds.md

@@ -62,4 +62,5 @@ To enable External Data Source Preview on your Azure Data Manager for Energy, cr
 We notify you once EDS preview is enabled in your Azure Data Manager for Energy resource.
 
 > [!div class="nextstepaction"]
-> [How to register an external data source with Azure Data Manager for Energy?](how-to-register-eds.md)
+> [How to register an external data source with Azure Data Manager for Energy?](how-to-register-eds.md)
+> [External data services faq](faq-energy-data-services.yml#Energy-Data-Services)