message: Update writing-custom-field-extensions.md
  Updated doc reference for validation import
diff: @@ -82,7 +82,7 @@ import {
  createScaffolderFieldExtension,
  } from '@backstage/plugin-scaffolder';
  import { MyCustomExtension } from './MyCustomExtension';
  -import { myCustomValidation } from './validation';
  +import { myCustomValidation } from './MyCustomExtension';
  export const MyCustomFieldExtension = scaffolderPlugin.provide(
  createScaffolderFieldExtension({
  