Info hint background and link color fixes

[zenoachtig]

This PR fixes a few small issues with the hint block and links within hint blocks.

• The info hint block did not properly use the set info semantic colour, now it does.
• Links inside hint blocks should be coloured according to the semantic colour, with the exception of the info block, which uses the normal link colour. They now correctly follow this behaviour. (Fixes RND-6390)
• Links using the accent link style had an underline that was too thin, it's now explicitly set to 1px.

Before & After

[changeset-bot]

🦋 Changeset detected

Latest commit: fe397c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
gitbook	Patch

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[github-actions]

Summary of the deployments:

Version 1 (production)

Version	URL	Status
Latest commit	https://22435721.gitbook-open.pages.dev	✅
PR	https://pr2953.gitbook-open.pages.dev	✅

Version 2 (experimental)

Version	URL	Status
Vercel	https://gitbook-v2-8y3tfq6eh-gitbook.vercel.app	✅
Cloudflare	https://bd7922b5-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	v1	v2
GitBook	https://22435721.gitbook-open.pages.dev/docs.gitbook.com	https://gitbook-v2-8y3tfq6eh-gitbook.vercel.app/url/docs.gitbook.com
E2E	https://22435721.gitbook-open.pages.dev/gitbook.gitbook.io/test-gitbook-open	https://gitbook-v2-8y3tfq6eh-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v1 (Inspect)	👍 Changes approved	12 changed	Mar 11, 2025, 10:24 AM
customers-v2 (Inspect)	👍 Changes approved	15 changed	Mar 11, 2025, 10:25 AM
default (Inspect)	👍 Changes approved	3 changed	Mar 11, 2025, 10:26 AM
v2-vercel (Inspect)	👍 Changes approved	2 changed	Mar 11, 2025, 10:28 AM

[linear]

RND-6390 Hint Block Customization - Link colour should default to a darker shade or give the user the option to choose the link colour.