[zh-cn] Update KubeCon dates (#44280)

* [zh-cn] Update KubeCon dates

* [zh-cn] Update KubeCon dates

Author: Fan-Lin

content/zh-cn/_index.html

@@ -70,14 +70,14 @@ <h2>将 150+ 微服务迁移到 Kubernetes 上的挑战</h2>
         <button id="desktopShowVideoButton" onclick="kub.showVideo()">观看视频</button>
         <br>
         <br>
-        <!-- <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/" button id="desktopKCButton">Attend KubeCon + CloudNativeCon North America on November 6-9, 2023</a> -->
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/" button id="desktopKCButton">参加 2023 年 11 月 6-9 日的北美 KubeCon + CloudNativeCon</a>
+        <!-- <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/" button id="desktopKCButton">Attend KubeCon + CloudNativeCon Europe on March 19-22, 2024</a> -->
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/" button id="desktopKCButton">参加 2024 年 3 月 19-22 日的欧洲 KubeCon + CloudNativeCon</a>
         <br>
         <br>
         <br>
         <br>
-        <!-- <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/" button id="desktopKCButton">Attend KubeCon + CloudNativeCon Europe on March 19-22, 2024</a> -->
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/" button id="desktopKCButton">参加 2024 年 3 月 19-22 日的欧洲 KubeCon + CloudNativeCon</a>
+        <!-- <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america-2024/" button id="desktopKCButton">Attend KubeCon + CloudNativeCon North America on November 12-15, 2024</a> -->
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america-2024/" button id="desktopKCButton">参加 2024 年 11 月 12-15 日的北美 KubeCon + CloudNativeCon</a>
 </div>
 <div id="videoPlayer">
     <iframe data-url="https://www.youtube.com/embed/H06qrNmGqyE?autoplay=1" frameborder="0" allowfullscreen></iframe>