add "Practice Linux Commands with Hands-on Labs" to "Ubuntu / Debian" node (#7122)

* add Practice Linux Commands with Hands-on Labs

* Update public/roadmap-content/devops.json

Co-authored-by: Arik Chakma <arikchangma@gmail.com>

* Update public/roadmap-content/devops.json

---------

Co-authored-by: huhuhang <huhuhang@github.com>
Co-authored-by: dsh <daniel.s.holdsworth@gmail.com>
Co-authored-by: Arik Chakma <arikchangma@gmail.com>

src/data/roadmaps/devops/content/ubuntu--debian@cTqVab0VbVcn3W7i0wBrX.md

@@ -15,3 +15,4 @@ Visit the following resources to learn more:
 - [@video@Introduction to Linux - Full Course for Beginners](https://www.youtube.com/watch?v=sWbUDq4S6Y8\&pp=ygUTVWJ1bnR1IGNyYXNoIGNvdXJzZQ%3D%3D)
 - [@article@Linux Fundamentals](https://academy.hackthebox.com/course/preview/linux-fundamentals)
 - [@feed@Explore top posts about Ubuntu](https://app.daily.dev/tags/ubuntu?ref=roadmapsh)
+- [@course@Practice Linux Commands with Hands-on Labs"](https://labex.io/courses/linux-basic-commands-practice-online)