Icon in read More text

Hello,

I would like to insert a double arrow after the Read More text.

I have added the font-awesome code in the theme blog setting for Read More :
"Lire la suite <i class="fa fa-angle-double-right"></i>"

The icons shows very well in Elementor blocks : https://ere-digitale-en-resumes.com/tous-les-livres/
but not on GP archives : https://ere-digitale-en-resumes.com/categorie/blog/

Does the theme remove html tags from Read More ?

Is there a way to make the icon show ?

Thanks

Bérangère