update

packages/artplayer-document/docs/zh-cn/Questions/How to add setting panel.md

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+---
+title: 怎么添加设置面板
+sidebar_position: 6
+---
+
+设置面板类似于列表选择的集合，而且支持多层嵌套
+
+### 切换字幕
+
+<div className="run-code">▶ Run Code</div>
+
+```js
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+    setting: true,
+    flip: true,
+    playbackRate: true,
+    aspectRatio: true,
+    settings: [
+        {
+            html: 'Subtitle',
+            selector: [
+                {
+                    default: true,
+                    html: '<span style="color:red">Subtitle 01</span>',
+                    url: '/assets/sample/subtitle.srt?id=1',
+                },
+                {
+                    html: '<span style="color:yellow">Subtitle 02</span>',
+                    url: '/assets/sample/subtitle.srt?id=2',
+                },
+            ],
+            onSelect: function (item, $dom) {
+                console.info(item, $dom);
+
+                art.subtitle.url = item.url;
+                
+                return '你点击了 ' + item.html;
+            },
+        },
+    ],
+});
+```