docs: add features & penalties

[shamshodisaev]

Title of Pull Request

Update react-tests task

🤔 This is a

• ⚙️ Update to an existing task
• 🐛 Fix in a task or related content

Description

• Brief Overview:
• Add localstorage testing feature
• Update penalties

Additional Information

https://github.com/rolling-scopes-school/tasks/blob/feature/react-tasks-2/react/modules/tasks/tests.md

Checklist

• ✅ I have performed a self-review of my own code.
• 📝 I have commented my code, particularly in hard-to-understand areas.
• 🔧 I have made corresponding changes to the documentation (if applicable).
• 🚫 My changes generate no new warnings or errors.

[kravaring]

In overall looks good for me. One small point: 14 points for a task looks a little bit unusual, but isn't a blocker :)