Add HTML tags in TWIG function LINK in template Drupal 8

Hi, all!
I have html code: <a href="about-us.html"><i class="fa fa-angle-right"></i> About Us</a>
In template this link output as {{ link('item.title, item.url) }}
If I added tag i to title: {{ link('<i class="fa fa-angle-right"></i> ' ~ item.title, item.url) }}
Then result on screen <i class="fa fa-angle-right"></i> About Us Only local images are allowed.
http://www.screencast.com/t/AJEldPRiA

How to add tags to the text link?

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/3/feed