Merge pull request #330 from plotly/nov-2024-webinar-ad

Change sidebar ad to Nov 2024 webinar

Author: red-patience

_includes/layouts/webinar_plug.html

@@ -1,5 +1,5 @@
 
-    <a href="https://ceara023164.typeform.com/PlotlyBetaCrew?utm_medium=graphing_libraries&utm_content=sidebar" target="_blank">
-      <img src="https://images.prismic.io/plotly-marketing-website-2/ZxJ7zoF3NbkBXuNq_PlotlyBetaUserGroup_Square.png?auto=format,compress"
-      style="width: 200px; height: 200px; position: fixed; bottom: 10px; left: 50px" alt="Join the Plotly Beta User Group!">
+    <a href="https://go.plotly.com/cox-automotive-dash-enterprise?utm_source=Webinar:%20Cox%20Automotive%2011/19/24&utm_medium=graphing_libraries&utm_content=sidebar" target="_blank">
+      <img src="https://images.prismic.io/plotly-marketing-website-2/ZyJjH68jQArT0CLD_CoxAuto_square_ads.jpg?auto=format,compress"
+      style="width: 200px; height: 200px; position: fixed; bottom: 10px; left: 50px" alt="Leaders in Data Apps: Action Heroes of Data and AI">
     </a>