update docs

packages/artplayer-document/docs/en/Libraries.mdx

@@ -63,13 +63,6 @@ var art = new Artplayer({
                 hls.destroy();
             }
 
-            // When the player is destroyed, the decoder instance must also be destroyed
-            art.on('destroy', () => {
-                if (hls) {
-                    hls.destroy();
-                }
-            });
-
             hls = new Hls();
             hls.loadSource(url);
             hls.attachMedia(video);
@@ -77,6 +70,13 @@ var art = new Artplayer({
     },
 });
 
+// When the player is destroyed, the decoder instance must also be destroyed
+art.on('destroy', () => {
+    if (hls) {
+        hls.destroy();
+    }
+});
+
 // Switch to a new video address
 art.url = '/assets/sample/video-new.m3u8';
 ```

packages/artplayer-document/docs/zh-cn/Libraries.mdx

@@ -61,13 +61,6 @@ var art = new Artplayer({
                 hls.destroy();
             }
 
-            // 播放器销毁时，也要销毁解码器实例
-            art.on('destroy', () => {
-                if (hls) {
-                    hls.destroy();
-                }
-            });
-
             hls = new Hls();
             hls.loadSource(url);
             hls.attachMedia(video);
@@ -75,6 +68,13 @@ var art = new Artplayer({
     },
 });
 
+// 播放器销毁时，也要销毁解码器实例
+art.on('destroy', () => {
+    if (hls) {
+        hls.destroy();
+    }
+});
+
 // 切换新的视频地址
 art.url = '/assets/sample/video-new.m3u8';
 ```