[docs] dashboard video

docs/site/layouts/index.html

@@ -140,10 +140,10 @@
           </a> - a web interface to easily manage your WhatsApp sessions!
           <br>
         </p>
-        <img src='/images/waha-dashboard.png' alt='Dashboard'
-             style='max-width: 100%; cursor: pointer'
-             onclick='window.open(this.src)'
-        >
+        <video autoplay loop muted playsinline controls='noremoteplayback' width="100%" poster='/images/waha-dashboard.png'>
+          <source src="/videos/waha-dashboard-overview.webm" type="video/webm" />
+          Download the <a href="/videos/waha-dashboard-overview.webm">Dashboard Overview video</a> .
+        </video>
       </div>
     </div>
   </div>