fix(issue-template): fix file format of issue templates

[lelouvincx]

🐧 Ubunchuu Contribute Request

Overview

❓️ What type of PR is this? (check all applicable)

• [ ] 📝 Content - Documentation Update
• [ ] 📝 Content - Blog Update
• [ ] 🎨 Style (UI/UX)
• [ ] 🍕 Feature
• [x] 🪲 Bug Fix
• [ ] 🤖 DevOps
• [ ] 🧑‍💻 Code Refactor

📝 Description for my changes

Fix wrong file format for issue templates, should be YAML instead of markdown.

📌 Related Issues

❗️MANDATORY❗️

Closes #85

[github-actions[bot]]

Pull request #86 merged!