Fix broken link

Author: lucagubler

README.md

@@ -23,7 +23,7 @@ Contributions are always welcome!
 
 - [ ] [How Does Linux Boot Process Work?](https://youtu.be/XpFsMB6FoOs)
 - [ ] [An introduction to the Linux boot and startup processes](https://opensource.com/article/17/2/linux-boot-and-startup)
-- [ ] [What happens when we turn on computer?](https://www.cdn.geeksforgeeks.org/what-happens-when-we-turn-on-computer)
+- [ ] [What happens when we turn on computer?](https://www.geeksforgeeks.org/what-happens-when-we-turn-on-computer/)
 - [ ] [What happens when we turn on computer?](https://leetcode.com/discuss/interview-question/125107/What-happens-when-we-turn-on-computer)
 - [ ] [From Power up to login prompt](http://www.scott-a-s.com/files/linux_boot.pdf)