feat/idea: improve quiz experience by hiding answers in README

To make the learning experience more engaging without requiring external tools or issue tracking, we can enhance the quiz section in the README by hiding the correct answer inside a collapsible Markdown block (<details> tag).

This allows users to attempt the quiz before revealing the correct answer, keeping the experience interactive and self-contained within GitHub.

✅ Proposed Solution

1️⃣ Update the Quiz Format in README

• Use Markdown collapsible blocks (<details>...</details>) to hide the correct answer so users can try answering before revealing it.

• Example update in README:

## 🧩 Quick Challenge!  
What was the main architectural challenge that Dinocrates faced?  

- [ ] Lack of materials  
- [ ] Navigation issues near the coast  
- [ ] Political instability  

<details>
  <summary>💡 Click to Reveal Answer</summary>
  ✅ **Correct answer:** Navigation issues near the coast.
</details>

✅ Impact:

🔹 Users engage with the quiz before checking the answer.
🔹 No need for external issue tracking or GitHub Actions.
🔹 Simple and fully compatible with GitHub Markdown.

Open the repository README and locate the quiz section described in the issue. Convert the quiz answer into a collapsible