Merge pull request #3859 from szkiba/main

Add xk6 topic .

Author: ahpook

topics/xk6/index.md

@@ -0,0 +1,10 @@
+---
+created_by: Grafana Labs
+display_name: Grafana k6 extension
+github_url: https://github.com/grafana/k6
+logo: xk6.png
+short_description: Extensions for the Grafana k6.
+topic: xk6
+url: https://k6.io/docs/extensions
+---
+With [k6](https://k6.io) extensions, you can create custom [k6](https://k6.io) binaries to support your specific reliability-testing needs.