bitcoin-paper: Add French Translation

_templates/bitcoin-paper.html

@@ -54,6 +54,15 @@ id: bitcoin-paper
             <span>{% translate translated_by %}</span>
             <a href="https://github.com/gubatron">Angel León</a>
           </div>
+        </li>
+
+        <li class="card bitcoin-paper-card">
+          <img src="/img/flags/fr.svg?{{site.time | date: '%s'}}" alt="French flag">
+          <a class="language-link" href="/files/bitcoin-paper/bitcoin_fr.pdf">Français</a> 
+          <div>
+            <span>{% translate translated_by %}</span>
+            <a href="https://github.com/Arnaud-Francois-Fausse">Arnaud-François Fausse</a>
+          </div>
         </li>   
         
         <li class="card bitcoin-paper-card">