Update download with new FlatHub button

download.phtml

@@ -44,7 +44,7 @@
   <ul class="imagelist">
     <li class="imagelistitem" style="background-image: url(<?=$top_dir?>/images/icons/flatpak.png);">
       <p class="justify"><?php printf (T_("An alternative to using your distribution's software manager is to use the Flatpak management system, which bundles all the necessary libraries for you. This can ease the installation of newer versions of GnuCash on older Linux machines. If you have <a href=\"%s\">Flatpak</a> installed, you can download any recent version of <span class=\"gnucash\">GnuCash</span> from"), $URL_FLATPAK)?></p>
-      <p class="justify"><a href="<?php echo $URL_FLATHUB;?>"><img width='240' alt='Download on Flathub' src='https://flathub.org/assets/badges/flathub-badge-en.png'/></a></p>
+      <p class="justify"><a href="<?php echo $URL_FLATHUB;?>"><img width='240' alt='Download on Flathub' src='https://flathub.org/api/badge?locale=<?=$locale?>'/></a></p>
       <p class="justify"><a href="<?php 
       /* Translators: %s is the base url of the gnucash wiki, adjust this,
          if a localized instance of the Flatpak page exists like "%sDe/Flatpak" */