docs: improve wording clarity in UI introduction

[Nikhil166-tech]

Description

Improves wording for clarity and readability in the introduction to describing the UI.

Changes

• Text-only update
• No functional changes

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[github-actions]

Size changes

Details

📦 Next.js Bundle Analysis for react-dev

This analysis was generated by the Next.js Bundle Analysis action. 🤖

This PR introduced no changes to the JavaScript bundle! 🙌