added tip for play section in README.md (#379)

Co-authored-by: Sriram <[email protected]>

README.md

@@ -12,8 +12,7 @@ Watch this video to learn more about setting up the Grafana GitHub data source p
 
 [![GitHub data source plugin | Visualize GitHub using Grafana | Tutorial](https://img.youtube.com/vi/DW693S3cO48/hq720.jpg)](https://youtu.be/DW693S3cO48 "Grafana GitHub data source plugin")
 
-### Give it a try using Grafana Play
-With Grafana Play, you can explore and see how it works, learning from practical examples to accelerate your development. This feature can be seen on [GitHub data source plugin demo](https://play.grafana.org/d/cdgx261sa1ypsa/3-single-repo-with-override-examples).
+{{< docs/play title="Github data source plugin demo" url="https://play.grafana.org/d/d5b56357-1a57-4821-ab27-16fdf79cab57/github3a-queries-and-multi-variables" >}}
 
 ## GitHub API V4 (GraphQL)