chore: fix typo

[hyf0]

Summary

🤖 Generated by Copilot at b84ba09

This pull request fixes some minor typos in the scripts/meta/setup.mjs and scripts/README.md files. The purpose of this pull request is to enhance the quality of the code and documentation in the web-infra-dev/rspack repository.

Related issue (if exists)

Walkthrough

🤖 Generated by Copilot at b84ba09

• Fix typos in comments and documentation (link, link)

[changeset-bot]

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Latest commit: b84ba09

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