update docs

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

@@ -967,14 +967,11 @@ var art = new Artplayer({
     icons: {
         loading: '<img src="/assets/img/ploading.gif">',
         state: '<img src="/assets/img/state.png">',
-        loading: '',
-        state: '',
         play: '',
         pause: '',
         check: '',
         volume: '',
         volumeClose: '',
-        subtitle: '',
         screenshot: '',
         setting: '',
         pip: '',
@@ -984,11 +981,14 @@ var art = new Artplayer({
         aspectRatio: '',
         config: '',
         lock: '',
+        flip: '',
         unlock: '',
         fullscreenOff: '',
         fullscreenOn: '',
         fullscreenWebOff: '',
         fullscreenWebOn: '',
+        switchOn: '',
+        switchOff: '',
         indicator: '',
     },
 });