README.md: Fix typo

[pra17dod]

This fixes 'file' -> 'files, 'be same' -> 'be the same' and 'Similiarly' -> 'Similarly' typos Fixes #773

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[pra17dod]

@abhishalya @anshalshukla @CLiu13 Please review the PR.

[pra17dod]

@abhishalya Please Review the PR