!897 docs(#I2DGI6): update table export javascript docs

* doc(#I2DGI6): Table 组件导出功能文档增加引用 js 文件说明

src/BootstrapBlazor.Shared/Pages/Table/TablesExport.razor

@@ -37,6 +37,10 @@
     services.AddBootstrapBlazorTableExcelExport();
 }</Pre>
 
+<h4>JS 文件</h4>
+
+<Pre>&lt;script src="_content/BootstrapBlazor.TableExport/js/export.min.js"&gt;&lt;/script&gt;</Pre>
+
 
 <Block Title="表格导出功能" Introduction="通过设置 <code>ShowExportButton</code> 属性是否显示导出按钮，默认为<code>false</code>" CodeFile="table.45.html">
     <Table TItem="BindItem"
@@ -87,4 +91,4 @@
     {
         Version = await VersionManager.GetVersionAsync("bootstrapblazor.tableexport");
     }
-}
+}

src/BootstrapBlazor.Shared/Shared/NavMenu.razor.cs

@@ -405,6 +405,7 @@ namespace BootstrapBlazor.Shared.Shared
         {
             var it = new DemoMenuItem()
             {
+                IsUpdate = true,
                 Text = "表格 Table"
             };
 
@@ -482,6 +483,7 @@ namespace BootstrapBlazor.Shared.Shared
 
             it.AddItem(new DemoMenuItem()
             {
+                IsUpdate = true,
                 Text = "导出功能",
                 Url = "tables/export"
             });