Merge pull request #31356 from Arhell/update-date

[pl] update date to mention KubeCon NA 2022

Author: k8s-ci-robot

content/pl/_index.html

@@ -44,12 +44,12 @@ <h2>The Challenges of Migrating 150+ Microservices to Kubernetes</h2>
         <button id="desktopShowVideoButton" onclick="kub.showVideo()">Obejrzyj wideo</button>
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-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccncna21" button id="desktopKCButton">Weź udział w KubeCon North America 11-15.10.2021</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe-2022/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu22" button id="desktopKCButton">Weź udział w KubeCon Europe 17-20.06.2022</a>
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-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe-2022/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu22" button id="desktopKCButton">Weź udział w wirtualnym KubeCon Europe 17-20.5.2022</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccncna21" button id="desktopKCButton">Weź udział w KubeCon North America 24-28.10.2022</a>
 
 </div>
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