doc: 增加串口参数配置类文档

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/SerialPorts/SerialPortFactories.razor

@@ -44,3 +44,7 @@ private ISerialPortClient? SerialPortClient { get; set; }</Pre>
     <li>接收数据方法 <code>ReceiveAsync</code></li>
     <li>关闭端口方法 <code>CloseAsync</code></li>
 </ul>
+
+<p class="code-label">4. 串口参数配置类 <code>SerialPortOptions</code></p>
+
+<p>通过此配置类对串口参数进行配置</p>