fix: WEB-626 overflowing tabbed content

[carlagn]

⚠️ Should only be merged after merging #6201 and rebasing this PR

Fixes #WEB-626

[github-actions]

Absolute URL check

No absolute URLs to prisma.io/docs found.

[github-actions]

Redirect check

This PR probably requires the following redirects to be added to static/_redirects:

• This PR does not change any pages in a way that would require a redirect.

[github-actions]

original	preview
content/100-getting-started/02-setup-prisma/200-add-to-existing-project/110-relational-databases/300-next-steps.mdx	content/100-getting-started/02-setup-prisma/200-add-to-existing-project/110-relational-databases/300-next-steps.mdx
content/100-getting-started/index.mdx	content/100-getting-started/index.mdx
content/200-orm/500-reference/050-prisma-client-reference.mdx	content/200-orm/500-reference/050-prisma-client-reference.mdx

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