doc: 更新图标示例

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/Icons/AntDesignIcons.razor

@@ -23,7 +23,8 @@
 <Pre>&lt;link href="_content/BootstrapBlazor.AntDesignIcon/BootstrapBlazor.AntDesignIcon.bundle.scp.css" rel="stylesheet"&gt;</Pre>
 
 <div class="mb-2">
-    <AntDesignIcon Category="AntDesignIconCategory.Outlined" Name="github"></AntDesignIcon>
+    <AntDesignIcon Category="AntDesignIconCategory.Filled" Name="left-circle"></AntDesignIcon>
+    <AntDesignIcon Category="AntDesignIconCategory.Outlined" Name="left-circle"></AntDesignIcon>
 </div>
 
 <Pre>&lt;AntDesignIcon Category="AntDesignIconCategory.Outlined" Name="github"&gt;&lt;/AntDesignIcon&gt;</Pre>