Typo in documentation for range form element

The documentation for the range form element shows an example with input type number instead of range.

$form['quantity'] = array(
  '#type' => 'number',
  '#title' => $this->t('Quantity'),
);

Which should be

$form['quantity'] = array(
  '#type' => 'range',
  '#title' => $this->t('Quantity'),
);