Update README.md

[Nitya-003]

Closes #355

Describe the add-ons or changes you've made 📃

This PR enhances the overall README documentation to improve onboarding and clarity for new contributors and first-time users.

Key improvements include:

• Added a clear Getting Started section with setup steps and prerequisites
• Introduced a Project Architecture overview explaining major modules like automation, authentication, admin tools, and AI models
• Included example use cases and commands to help users understand Jarvis functionality
• Improved contribution guidelines and PR expectations for open-source contributors (GSSoC, Hacktoberfest, IWOC, etc.)
• Fixed Markdown & HTML rendering issues to ensure badges and sections display correctly on GitHub

These changes make the repository more beginner-friendly and contributor-ready.

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Working Video 📷

Not applicable, as this PR focuses on documentation improvements only.

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Type of change ☑️

What sort of change have you made:

• Bug fix
• New feature
• Code style update (formatting, local variables)
• Documentation update
• Database update

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Note to reviewers 📄

This PR does not affect application logic or functionality.
All changes are documentation-only and aimed at improving contributor experience and readability.
Please review the README structure and content for clarity and completeness.

[github-actions]

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[Avdhesh-Varshney]

@Nitya-003 You have distort the typography styling in headings as well as bullet points.

And in-proper heading elements used.
Please improve, I'll merge.

[Nitya-003]

@Avdhesh-Varshney Check now or Please explain me what is required? and Please label it under SWOC.

[Avdhesh-Varshney]

@Nitya-003 Sorry but this repo is not part of swoc'26 and PR created earlier than 1 jan are not counted in swoc'26

Please improve the getting started section as well and revert the open-source programs section as well.

From next time, Never commit directly into main branch.

[Nitya-003]

@Avdhesh-Varshney Ok I will