Fix line indent in dashboard.js

I found a little coding standard bug in dashboard.js: the line indent is wrong in:

/**
 * Implements Drupal.behaviors for the Dashboard module.
 */
Drupal.behaviors.dashboard = {
    attach: function (context, settings) {
    $('#dashboard', context).once(function () {
      $(this).prepend('<div class="customize clearfix"><ul class="action-links"><li><a href="#">' + Drupal.t('Customize dashboard') + '</a></li></ul><div class="canvas"></div></div>');
      $('.customize .action-links a', this).click(Drupal.behaviors.dashboard.enterCustomizeMode);
    });