docs: Update intellisense regex to handle inner brackets

[longzheng]

Description

The current Tailwind CSS Intellisense regex doesn't handle inner brackets, for example if I have a class value of

'bg-background focus:shadow-[0_0_15px_0_rgba(0,0,0,0.1)] text-foreground'

Then the current regex will stop matching after the rgba(0,0,0,0.1) because of the end bracket.

You can see a more elaborate example and the behaviour of the current regex here https://regex101.com/r/QSAKAA/1

This updated regex handles inner brackets. Demo https://regex101.com/r/TyIbT9/1

Additional context

I've submitted a similar PR to the clsx library for consistency.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Follow the Style Guide.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).

[vercel]

@longzheng is attempting to deploy a commit to the Joe Bell OSS Team on Vercel.

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[joe-bell]

Amazing work, thanks @longzheng! Seems like this is future-proof for beta.cva.style too

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	Jan 22, 2025 10:33am
docs-beta	✅ Ready (Inspect)	Visit Preview	Jan 22, 2025 10:33am

[longzheng]

Amazing work, thanks @longzheng! Seems like this is future-proof for beta.cva.style too

Oh interesting I didn't know about this new syntax but yes it looks like it will work too https://regex101.com/r/kpzHQR/1

[longzheng]

Oh wait I see the beta docs are different, I'll update the beta page equivalent too.

[joe-bell]

Thanks again for this @longzheng!