Change description with changed example

Author: ManickaP

xml/System.Net.Http/WinHttpHandler.xml

@@ -751,7 +751,7 @@ When this property is set to `true`, all HTTP redirect responses from the server
 
 ## Examples
 
-The following code example implements the callback. If there are validation errors, this method displays them and returns `false`, which prevents communication with the unauthenticated server.
+The following code example implements the callback. If there are validation errors, this method returns `false` preventing communication with the unauthenticated server. Otherwise, it allows for additional validation and return `true` if the certificate is valid.
 
  :::code language="csharp" source="~/snippets/csharp/System.Net.Http/WinHttpHandler/program.cs" id="Snippet1":::
  ]]></format>