docs: enhance readability in contribution guidelines

[Rish-2006]

Description

This pull request updates the welcome introduction in the contribution guidelines file. It refines the opening text to improve clarity and onboarding alignment for incoming open-source developers.

Related Issue

Closes #1890

Which package(s)?

website

Type of Change

• Documentation ('type:docs')

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📥 Commits

Reviewing files that changed from the base of the PR and between db6c3d8 and 11a26c2.

📒 Files selected for processing (2)

• CONTRIBUTING.md
• README.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

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[github-actions]

Hi @Rish-2006 👋

⭐ Star this repo before your PR merges.

Why? GSSoC 2026 contributors who star get priority review and points credit. After you star, push any commit (or re-run this check). The needs-star label lifts automatically.

Thanks for your contribution to TermUI.