docs: fix webpack repo links that use legacy branch name

[hex2dec]

The new default branch name of webpack repository is main, and the links in the docs still use the legacy branch name master.

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• ✅ login: hex2dec / name: William Huang (6a30c91)

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[hex2dec]

hi @chenxsan, the E2E testing failed because sass and dart2js don't support the latest Node.js 21 at the moment. Can we fix the GitHub Actions CI to use Node.js 20. If so, i will submit a PR.

• Node v21 - navigator object sass/dart-sass#2122 (comment)

[chenxsan]

hi @chenxsan, the E2E testing failed because sass and dart2js don't support the latest Node.js 21 at the moment. Can we fix the GitHub Actions CI to use Node.js 20. If so, i will submit a PR.

• Node v21 - navigator object sass/dart-sass#2122 (comment)

Probably wait for Node.21 to get it fixed? nodejs/node#50269

[hex2dec]

@chenxsan

Thanks! I found that Node.js has added the navigator.userAgent property, so we wait for it to release a new version.

• lib: add navigator.userAgent nodejs/node#50200

The dart2js also fixes a missing navigator.userAgent in Node.js 21.

• dart-lang/sdk@e285a57

[hex2dec]

hi @chenxsan, the Node.js v21.1.0 has been released. How can i recheck the e2e testing?

• https://github.com/nodejs/node/releases/tag/v21.1.0

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[chenxsan]

Thanks for your contribution.