refactor(ImageViewer): image element is not closed (#6285)

* ImagePreviewer 修复html标签 img

修复img没有结束符

* chore: 代码格式化

Co-Authored-By: Mydashixiong <136679228+Mydashixiong@users.noreply.github.com>

---------

Co-authored-by: Argo Zhang <argo@live.ca>

Author: Mydashixiong

src/BootstrapBlazor/Components/ImagePreviewer/ImagePreviewer.razor

@@ -5,7 +5,7 @@
 <div tabindex="-1" class="bb-previewer collapse active" id="@Id" style="z-index: @ZIndex;">
     <div class="bb-viewer-mask"></div>
     <div class="bb-viewer-canvas">
-        <img src="@GetFirstImageUrl()" class="bb-viewer-img" style="transform: scale(1) rotate(0deg); margin: 0;">
+        <img src="@GetFirstImageUrl()" class="bb-viewer-img" style="transform: scale(1) rotate(0deg); margin: 0;" />
     </div>
     <span class="bb-viewer-btn bb-viewer-close">
         <span></span>