broken link referring to CNS repo

[mateibarbu19]

Hello, I found a broken link on a index.md and wanted to suggest replacing it with https://ocw.cs.pub.ro/courses/cns/resources/repo.

[gabrielmocanu]

Hi @mateibarbu19.

Yes, you're right.
Can you make a PR with your fix?

[alexandrastroiu]

Hello! I am interested in fixing this issue. I have already opened a pull request with the changes.