Docs: add content outline to Cloud what's new (#76579)

* Added content outline to what's new

* Fixed formatting

* add docs link

* Added version syntax

* Added page anchor and removed text reference to page section

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Co-authored-by: harisrozajac <haris.rozajac12@gmail.com>

docs/sources/whatsnew/whats-new-next/index.md

@@ -18,6 +18,19 @@ weight: -37
 
 Welcome to Grafana Cloud! Read on to learn about the newest changes to Grafana Cloud.
 
+## Content outline
+
+<!-- Thanos Karachalios -->
+<!-- OSS,Enterprise -->
+
+October 12, 2023
+
+_Generally Available in Grafana Cloud_
+
+Introducing Content Outline in Grafana **Explore**. We recognized the challenges of complex mixed queries, as well as, lengthy logs and traces results, leading to time-consuming navigation and the loss of context. Content outline is our first step towards seamless navigation from log lines to traces and back to queries ensuring quicker searches while preserving context. Experience efficient, contextual investigations with this update in Grafana Explore. To learn more, refer to the [Content outline documentation](https://grafana.com/docs/grafana/<GRAFANA_VERSION>/explore/#content-outline), as well as the following video demo.
+
+{{< video-embed src="/media/docs/grafana/explore/content-outline-demo.mp4" >}}
+
 ## Issues snapshot in Kubernetes Monitoring
 
 <!-- Beverly Buchanan -->