title: How to use File Tranform for an endpoint in DevOps
body: <p>I'm transforming my Web.config in my Release Pipeline in Azure DevOps.<br>
  In this Web.config I have multiple AppSettings keys, but I also have one Endpoint.</p>
  
  <p>I also want to make the address of this endpoint to be a variable from Azure DevOps.</p>
  
  <p>Does anyone know how to do this?</p>