Change xplex link to https

Signed-off-by: Kaustav Das Modak <[email protected]>

Author: Kaustav Das Modak

index.html

@@ -80,7 +80,7 @@ <h1>xplex</h1>
             <p class="caption">Next generation streaming &mdash; for gamers.</p>
             <p>Live stream simultaneously to multiple destinations and get all your team to stream together. Your professional game streaming studio in the cloud.</p>
             <p>
-                <a href="http://xplex.me" class="button">Coming soon!</a>
+                <a href="https://xplex.me" class="button">Coming soon!</a>
             </p>
         </section>
     </article>