Change the banner text for the nvidia webinar

themes/haystack/layouts/partials/announcement.html

@@ -1,4 +1,4 @@
-<a href="https://www.deeplearning.ai/short-courses/building-ai-application-with-haystack/" class="announcement-bar">
+<!-- <a href="https://www.deeplearning.ai/short-courses/building-ai-application-with-haystack/" class="announcement-bar">
     <div class="container">
         <span><strong> Enroll in our DeepLearning AI course: Building AI Applications with Haystack</strong> 🚀</span>
         <span>
@@ -20,4 +20,28 @@
       </svg>
         </span>
     </div>
+</a> -->
+
+<a href="https://hubs.li/Q02N0N4l0" class="announcement-bar">
+  <div class="container">
+      <span>📅 <strong> Upcoming Webinar: Building Performant AI Applications with NVIDIA NIMs and Haystack</strong> </span>
+      <span>
+          <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="14px"
+      height="14px"
+      viewBox="0 0 13 14"
+      role="presentation"
+      focusable="false"
+      class="arrow"
+    >
+      <path
+        d="M6.33.8a.43.43 0 01.61 0l5.93 6.05c.09.09.13.21.13.32 0 .11-.04.23-.13.31l-5.93 6.05a.43.43 0 01-.61 0L5.31 12.5a.44.44 0 010-.62L8.62 8.5c.05-.06.02-.15-.06-.15H.43A.44.44 0 010 7.91V6.44C0 6.2.19 6 .43 6h8.14c.08 0 .12-.09.06-.15L5.31 2.46a.44.44 0 010-.62L6.33.8z"
+        fill="#fff"
+        fill-rule="evenodd"
+        clip-rule="evenodd"
+      ></path>
+    </svg>
+      </span>
+  </div>
 </a>