updated date to the aug 13th

index.html

@@ -12,7 +12,7 @@
 <header> 
 <img src="logo_hm_bologna.png" class="logo">    
     <h1>Trans Hackmeeting</h1>
-		<h2>August 9-12th 2018 @ Le Goutailloux, Tarnac (FR)</h2>
+		<h2>August 9-13th 2018 @ Le Goutailloux, Tarnac (FR)</h2>
 </header>
 <section>
 <p>