Update readme with eslint v9 hints

[hwbllmnn]

@terrestris/devs Please review.

[LukasLohoff]

Thanks, this is very helpful!

Just noticed the @stylistic/eslint-plugin version mentioned in the README isn't up to date. See https://www.npmjs.com/package/@stylistic/eslint-plugin?activeTab=versions

It should be npm i -D @stylistic/eslint-plugin@^4 probably.

[hwbllmnn]

Thanks, this is very helpful!

Just noticed the @stylistic/eslint-plugin version mentioned in the README isn't up to date. See https://www.npmjs.com/package/@stylistic/eslint-plugin?activeTab=versions

It should be npm i -D @stylistic/eslint-plugin@^4 probably.

Right, I clarified it (mentioning that the version hint can probably be omitted anyway most of the time).