Update README.md

[hencca]

It is not true, that to use css-loader webpack 5 is needed.

This PR contains a:

• [ ] bugfix
• [ ] new feature
• [ ] code refactor
• [ ] test update
• [x] typo fix
• [ ] metadata update

Motivation / Use-Case

I was just brushing up on my webpack skills, and noticed this error.

Breaking Changes

Additional Info

[linux-foundation-easycla[bot]]

• :x: - login: @hencca / name: Henrik Rinne . The commit (eb80e9d03e85267497a96d099b1269ea88831354) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[alexander-akait]

I think we should rewrite it - To use the latest version of css-loader you need webpack v5