Put Polylang language switcher into header.php

Hi

I have one questions regarding the usage of the plugin on which answer I did not find on the wordpress support website.

1. How can I place the language switcher icons in the top right corner of the site? On the polylang website I found the code

<?php pll_the_languages();?>
which should help but I don’t know how to code so I don’t know where to place it…

this is my link : https://www.sunrichheritage.com