fix(tailwind): delete group class and update readme

[TriStarGod]

Not a valid class - tailwindlabs/tailwindcss#4666

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Name	Status	Preview	Comments	Updated (UTC)
tsed-formio-storybook	❌ Failed (Inspect)			Jun 6, 2023 2:01am

[Romakita]

:tada: This PR is included in version 2.1.3 :tada:

The release is available on:

• v2.1.3
• GitHub release

Your semantic-release bot :package::rocket:

[TriStarGod]

@Romakita Could you push this to npm?

[Romakita]

It’s already on npm when you have the release message on an issue!

[TriStarGod]

@Romakita Maybe for tsed-formio but not for @tsed/tailwind-formio

[Romakita]

Arf maybe the publication has failed

[Romakita]

Ok got it. I'll republish a new version ;)

[Romakita]

Released ;)