Readme get started section is leading reader away from the new sdk to the old sdk

[gitnubster]

The links below from the readme.md leads the reader to the old VSS SDK. Why is that? Isn't the Azure Devops Extension SDK the preferred SDK?

• Client SDK for developing Azure DevOps extensions.
• Develop a web extension for Azure DevOps

This way new developers do not adopt the new SDK, at least, when speaking of Azure Devops Services.

[gitnubster]

Actually another issue exists already... still open since 2019... https://github.com/microsoft/azure-devops-extension-sdk/issues/10