Dart sample code omits `moduleId`

[mehaase]

On https://angular.io/docs/dart/latest/guide/forms.html, the text says:

3. The moduleId property sets the base for module-relative URLs such as the templateUrl.

But the example code that is being described doesn't actually use moduleId.

[chalin]

Hi Mark, thanks for filing an issue. The forms page is in need of an overhaul. Hopefully that will happen soon. In the meantime you can ignore that step since Dart doesn't need a moduleId.

cc @kwalrath