[Bug] add classic branch protection rule

[fndejong93]

Summary

The tutorial talks about "branch protection rules". In Github it is mentioned that this is the classic rule and that it is preferred to use branch ruleset.

How to reproduce

1. Go to tutorial for steps 4
2. follow the steps.
3. Know you will see the button "add branch ruleset" but the tutorial wants you to click on "add classic branch protection rule"
4. This was not very clear to me.

Additional context

Add any other context about the problem here.

[nguyenalex836]

@fndejong93 Thank you for submitting this issue! I'll triage this for the team to review ✨