Arranged the Remote Job Sites list in README alphabetically (A–Z) for better readability

[Akanksha-Patnaik]

I have arranged the Remote Job Sites list in the README file alphabetically (A–Z).
This change enhances readability and helps users quickly find their preferred sites.

Related Issue

Fixes #40

Checklist

• My changes follow the repository’s contribution guidelines.
• I have verified the alphabetical order carefully.
• I have not removed or modified any existing links.
• I have checked that the Markdown formatting is correct.
• I have proofread the file before submission.

Thank you for reviewing my contribution. 😊

[Copilot]

Pull Request Overview

This PR reorganizes the Remote Job Sites section in the README by sorting all job site entries alphabetically from A to Z, improving the document's organization and making it easier for users to locate specific job sites.

Key changes:

• Alphabetically sorted 20 remote job sites from A (Authentic Jobs) to W (Working Nomads)
• Removed two blank lines that preceded the Remote Job Sites section
• Maintained all existing links without modification

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