docs : layout-change concise stoppage of animation

_includes/layout-change.js

@@ -12,9 +12,8 @@
             { height: '80%', width: $container.width() } : 
             { width: 'auto' };
           // stop any animation on container height / width
-          if ( $container.is(':animated') ) {
-            $container.stop();
-          }
+          $container.filter(':animated').stop();
+
           $container.addClass('no-transition').css( style );
           setTimeout(function(){
             $container.removeClass('no-transition').isotope({ layoutMode : mode });