Update index.html

Author: AMJoshaghani

index.html

@@ -69,7 +69,7 @@ <h1 class='text'>Polyrhythm - 5 over 4 - Two Layers</h1>
 var layer2 = beet.layer(fives, fivesCallback);
 beet.add(layer1);
 beet.add(layer2);
-beet..start();
+beet.start();
 </code></pre>
   </div>
 </section>