docs: add missing new terminal instruction for frontend and fix header typo

[Mohit-001-hash]

Description

This PR resolves two documentation issues to improve the onboarding experience:

1. Missing Terminal Instruction: In the Quick Start guide, Step 1 starts a continuous Node server (node index.js), which blocks the terminal. Step 3 previously lacked the instruction to open a new terminal, which could confuse new contributors trying to run the frontend commands. I added a brief note to open a new terminal window.
2. Header Typo: Fixed a typo in the main project header ([3rd Pize] -> [3rd Prize]).

Related Issue(s)

Fixes #None (just a documentation fix)

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Refactoring (code improvement without functional change)
• 📝 Documentation update
• 🚨 Breaking change (fix or feature that would cause existing functionality to not work as expected)

Architecture Impact

• 🖥️ Frontend (React / Web Dashboard)
• ☁️ AWS Pipeline / Backend
• 💻 Electron Desktop App
• 📖 General Documentation

Checklist:

• My code follows the Contributing Guidelines of this project.
• I have performed a self-review of my own code.
• I have tested these changes locally and they generate no new warnings or errors.
• I have NOT bypassed the AWS pipeline or hardcoded mock data in production builds.
• I have checked that mobile responsiveness is maintained (if making UI changes).

Screenshots (if applicable)

None