chore: fix typos and refine texts

[osrm]

Fixed a few typos and grammar for clarity. Hope this helpful.

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[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[blukat29]

Thanks for the contribution @osrm. Please follow the CLA bot's instruction to sign the CLA.

[osrm]

Thanks for the contribution @osrm. Please follow the CLA bot's instruction to sign the CLA.

Done. Thank you.