incorrect reference to question page

[sandokanfirst]

Describe the bug A clear and concise description of what the bug is.

On https://github.com/microsoft/Security-101?tab=readme-ov-file under 5.3, the question link refers to 5.4 where it should reference 5.3. In other words, the link https://github.com/microsoft/Security-101/blob/main/5.4%20End%20of%20module%20quiz.md is dead.