refactor: downloads remaining block in link.html

templates/link.html

@@ -12,7 +12,9 @@
         hx-get="/link/{{ id }}/remaining"
         hx-trigger="click from:#link delay:0.2s, every 60s"
       >
+        {% block downloads_remaining %}
           {{ self::get_downloads_remaining_text(record) }}
+        {% endblock downloads_remaining %}
       </div>
       <button class="return-button" onclick="clipboard()">
         Copy to Clipboard