Verify docfx fails on broken link

Author: bkoelman

docs/usage/options.md

@@ -125,7 +125,7 @@ Because we copy resource properties into an intermediate object before serializa
 [ASP.NET ModelState validation](https://docs.microsoft.com/en-us/aspnet/core/mvc/models/validation) can be used to validate incoming request bodies when creating and updating resources. Since v5.0, this is enabled by default.
 When `ValidateModelState` is set to `false`, no model validation is performed.
 
-How nullability affects ModelState validation is described [here](~/usage/resources/nullability.md).
+How nullability affects ModelState validation is described [here](~/usage/resources/nullability2.md).
 
 ```c#
 options.ValidateModelState = true;