Merge pull request #23091 from jihoon-seo/200812-Modify-text-in-Korean-top-page-for-KubeCon-announcement

Modify text in Korean top page for KubeCon announcement

Author: k8s-ci-robot

content/ko/_index.html

@@ -41,12 +41,12 @@ <h2>150+ 마이크로서비스를 쿠버네티스로 마이그레이션하는 
         <button id="desktopShowVideoButton" onclick="kub.showVideo()">Watch Video</button>
         <br>
         <br>
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu20" button id="desktopKCButton">Attend KubeCon in Amsterdam on August 13-16, 2020</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu20" button id="desktopKCButton">Attend KubeCon EU virtually on August 17-20, 2020</a>
         <br>
         <br>
         <br>
         <br>
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu20" button id="desktopKCButton">Attend KubeCon EU virtually on August 17-20, 2020</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccncna20" button id="desktopKCButton">Attend KubeCon NA virtually on November 17-20, 2020</a>
 </div>
 <div id="videoPlayer">
     <iframe data-url="https://www.youtube.com/embed/H06qrNmGqyE?autoplay=1" frameborder="0" allowfullscreen></iframe>