Docs: add gague visualization Play link (#85897)

* Docs: add gague visualization Play link

* Fixed typo

* Updated title to match dashboard title

---------

Co-authored-by: Isabel Matwawana <76437239+imatwawana@users.noreply.github.com>

docs/sources/panels-visualizations/visualizations/gauge/index.md

@@ -23,6 +23,8 @@ Gauges are single-value visualizations that can repeat a gauge for every series,
 
 {{< figure src="/static/img/docs/v66/gauge_panel_cover.png" max-width="1025px" alt="A gauge visualization">}}
 
+{{< docs/play title="Grafana Gauge Visualization" url="https://play.grafana.org/d/KIhkVD6Gk/" >}}
+
 ## Value options
 
 Use the following options to refine how your visualization displays the value: