contact: Add gpg fingerprint

contact.html

@@ -125,9 +125,11 @@
 										<ul class="icons" style="padding: 0.15em 0.15em 0.15em 0.15em">
 											<li><a href="mailto:mickael@tansorier.fr" class="icon fa-envelope-o" title="E-mail"><span class="label">E-mail</span></a></li>
 										</ul>
-										<a href="mailto:mickael@tansorier.fr">E-mail</a>
+										<a href="mailto:mickael@tansorier.fr">E-mail</a><br />
 									</h3>
 
+									<p>(Empreinte GPG: 2407 104A DA85 3190 D2DF 7747 2024 81AC A555 FA58)</p>
+
 									<hr class="normal"/>
 
 								</article>