doc: 更新示例

Author: ArgoZhang

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

@@ -145,9 +145,7 @@
         <CollapseItems>
             <CollapseItem Text="@Localizer["Consistency"]">
                 <HeaderTemplate>
-                    <div class="p-2">
-                        <Select Items="Items" @bind-Value="Value" IsPopover="true"></Select>
-                    </div>
+                    <Select Items="Items" @bind-Value="Value" IsPopover="true"></Select>
                 </HeaderTemplate>
                 <ChildContent>
                     <div>@Localizer["ConsistencyItem1"]</div>
@@ -157,7 +155,7 @@
             </CollapseItem>
             <CollapseItem Text="@Localizer["Feedback"]">
                 <HeaderTemplate>
-                    <div class="p-2">Header-Test</div>
+                    Header-Test
                 </HeaderTemplate>
                 <ChildContent>
                     <div>@Localizer["FeedbackItem1"]</div>
@@ -166,7 +164,7 @@
             </CollapseItem>
             <CollapseItem Text="@Localizer["Controllability"]">
                 <HeaderTemplate>
-                    <div class="p-2">Header-Test</div>
+                    Header-Test
                 </HeaderTemplate>
                 <ChildContent>
                     <div>@Localizer["ControllabilityItem1"]</div>