Docs: Sync latest master docs with 7.5.x (#33156)

* Docs: Sync latest master docs with 7.5.x

* remove some remaining next aliases and links

* Docs: Removed v8 doc changes

* fixed merge issue

docs/sources/panels/visualizations/heatmap.md

@@ -1,14 +1,14 @@
 +++
-title = "Heatmap"
+title = "Heatmap panel"
 description = "Heatmap visualization documentation"
 keywords = ["grafana", "heatmap", "panel", "documentation"]
 aliases =["/docs/grafana/latest/features/panels/heatmap/"]
 weight = 600
 +++
 
-# Heatmap
+# Heatmap panel
 
-The Heatmap panel visualization allows you to view histograms over time. For more information about histograms, refer to [Introduction to histograms and heatmaps]({{< relref "../../getting-started/intro-histograms.md" >}}).
+The Heatmap panel visualization allows you to view histograms over time. For more information about histograms, refer to [Introduction to histograms and heatmaps]({{< relref "../../basics/intro-histograms.md" >}}).
 
 ![](/img/docs/v43/heatmap_panel_cover.jpg)