user_registration_reminder-1.x-dev/user_registration_reminder.routing.yml

user_registration_reminder.settings:
  path: '/admin/config/user/user-registration-reminder'
  defaults:
    _title: 'User Registration Reminder Settings'
    _form: 'Drupal\user_registration_reminder\Form\SettingsForm'
  requirements:
    _permission: 'administer user_registration_reminder'