Adding link to new dashboard widget course (#25791)

content/en/dashboards/_index.md

@@ -109,6 +109,8 @@ View your dashboards in a mobile-friendly format with the Datadog Mobile App, av
 
 {{< learning-center-callout header="Try Creating Graph Widgets in the Datadog Learning Center" btn_title="Enroll Now" btn_url="https://learn.datadoghq.com/courses/dashboard-graph-widgets">}} Explore timeseries, query value, top list, table, distribution, and pie chart widgets. Learn how to configure the widgets and develop an understanding of when each widget type should be utilized. {{< /learning-center-callout >}}
 
+{{< learning-center-callout header="Try Creating Table, List, SLO, and Architecture Widgets in the Datadog Learning Center" btn_title="Enroll Now" btn_url="https://learn.datadoghq.com/courses/discovering-table-list-widgets">}} Explore table, list, SLO, and architecture widgets. Learn how to track the metrics and performance of a web application and discover how to present important data. {{< /learning-center-callout >}}
+
 {{< partial name="whats-next/whats-next.html" >}}
 
 [1]: /mobile/