message: chore: added some more of an example
diff: @@ -21,4 +21,12 @@ Field extensions are a way to combine an ID, a `React` Component and a
  `validation` function together in a modular way that you can then use to pass to
  the `Scaffolder` frontend plugin in your own `App.tsx`.
  -You can create your own Field Extension by us
  +You can create your own Field Extension by using the `createScaffolderFieldExtension` `API` like below:
  +
  +```tsx
  +//packages/app/scaffolder/
  +const CustomFieldExtensionComponent = () => {
  +
  +}
  +
  +
  