doc: 格式化内容

Author: ArgoZhang

src/BootstrapBlazor.Server/Locales/zh-CN.json

@@ -6488,7 +6488,7 @@
     "AttrHeaderText": "标题栏文字",
     "AttrItemTemplate": "选项模板",
     "AttrOnClickItem": "点击候选项回调方法",
-    "AttrOnDoubleClickItem": " 双击候选项回调方法",
+    "AttrOnDoubleClickItem": "双击候选项回调方法",
     "GetItemDisplayText": "获得显示项显示内容回调方法"
   },
   "BootstrapBlazor.Server.Components.Samples.Marquees": {