doc: 更新示例

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/Tabs.razor

@@ -437,7 +437,7 @@ private void Navigation()
 </DemoBlock>
 
 <DemoBlock Title="@Localizer["TabsChromeStyleTitle"]" Introduction="@Localizer["TabsChromeStyleIntro"]" Name="Chrome">
-    <Tab IsCard="true" ShowClose="true" TabStyle="TabStyle.Chrome" AllowDrag="true" ShowToolbar="true">
+    <Tab IsCard="true" ShowClose="true" TabStyle="TabStyle.Chrome" AllowDrag="true" ShowToolbar="true" ShowExtendButtons="true">
         <TabItem Text="@Localizer["TabItem1Text"]" Icon="fa-solid fa-user">
             <div>@Localizer["TabItem1Content"]</div>
         </TabItem>