重写测试用例

test/constructor.test.js

@@ -1,5 +1,5 @@
 describe('Constructor', function() {
-    var url = 'https://zhw2590582.github.io/assets-cdn/video/one-more-time-one-more-chance-480p.mp4';
+    var url = 'https://artplayer.org/assets/sample/video.mp4';
 
     afterEach(function() {
         [...Artplayer.instances].forEach(art => {