I create a about-us with Basic Page content type, and with path alias aliased it to \about-us ( nid = 2),Now in template file I want to get path alias

<li><a href="{{  ??????? }}">{{ 'About Us'|t }}</a></li>

in Drupal 7 I got it with url("node/2") but what is equivalent in Drupal 8? what snippet I have to use to get path alias of nid 2 in template file ?