Update index.md

Author: shannona

_pages/index.md

@@ -44,7 +44,7 @@ redirect_from:
     <td width="640px">
       <b>Envelope Overview:</b>
 
-      {% include video id="vcLCFKQvik" provider="youtube" %}
+      {% include video id="-vcLCFKQvik" provider="youtube" %}
       
     </td>    
   </tr>