doc(ExportPdfButton): update export sample code (#4958)

* chore: bump version 9.1.9-beat11

Co-Authored-By: vickyhcq <16112316+vickyhcq@users.noreply.github.com>

* doc: 更新示例文档

* refactor: 移除内置样式

* doc: 增加样式设置示例

* revert: 撤销更新

* chore: bump version 9.1.9-beta10

---------

Co-Authored-By: vickyhcq <16112316+vickyhcq@users.noreply.github.com>

Author: ArgoZhang

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

@@ -25,13 +25,20 @@
 <DemoBlock Title="@Localizer["SelectorTitle"]" Introduction="@Localizer["SelectorIntro"]" Name="Selector">
     <section ignore class="table-9527-02">
         <GroupBox Title="@Localizer["GroupBoxTitle"]">
-            <ValidateForm Model="@Model">
-                <EditorForm TModel="Foo" ItemsPerRow="3">
-                    <FieldItems>
-                        <EditorItem @bind-Field="@context.Hobby" Items="@Hobbies" />
-                    </FieldItems>
-                </EditorForm>
-            </ValidateForm>
+            <div class="row g-2 form-inline">
+                <div class="col-12 col-sm-6">
+                    <Display Value="Model.Name" ShowLabel="true" DisplayText="Name"></Display>
+                </div>
+                <div class="col-12 col-sm-6">
+                    <Display Value="Model.Address" ShowLabel="true" DisplayText="Address"></Display>
+                </div>
+                <div class="col-12 col-sm-6">
+                    <Display Value="Model.DateTime" ShowLabel="true" DisplayText="DateTime"></Display>
+                </div>
+                <div class="col-12 col-sm-6">
+                    <Display Value="Model.Education" ShowLabel="true" DisplayText="Education"></Display>
+                </div>
+            </div>
         </GroupBox>
     </section>
     <ExportPdfButton Selector=".table-9527-02" IsAsync="true" OnBeforeExport="OnBeforeExport" OnAfterDownload="OnAfterDownload" AutoDownload="true" FileName="@PdfFileName"></ExportPdfButton>