HTML markup on the link

<?php
use Drupal\Core\Link;
use Drupal\Core\Url;
use Drupal\Core\Render\Markup;

$url = Url::fromUri('https://mycode.blog/');
$linkText = '<span class="fa fa-angle-left"></span> '.$this->t('Go Back');
$linkHTMLMarkup = Markup::create($linkText);
$link = Link::fromTextAndUrl($linkHTMLMarkup, $url);
$link = $link->toRenderable();
return $link;