Minor grammar and clarity improvements to README.md as requested in #462.#479

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Adrija-verse wants to merge 2 commits intonumfocus:mainfrom

Adrija-verse:fix/grammar-improvements-readme

Commits on Feb 4, 2026

Improve 404 page design and mobile responsiveness
Adrija-verse
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Commits on Feb 5, 2026

Fix grammar and clarity issues in README
Adrija-verse
committed