添加hls.js演示

docs/lab/js/flv.js

@@ -2,7 +2,6 @@ var url = 'https://blog.zhw-island.com/assets-cdn';
 var art = new Artplayer({
     container: '.artplayer-app',
     url: url + '/video/one-more-time-one-more-chance-480p.flv',
-    type: 'flv',
     customType: {
         flv: function(video, url) {
             const flvPlayer = flvjs.createPlayer({