tweak display of code in headings

[jharrell]

Resolves DA-349

[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.

[cloudflare-workers-and-pages]

Deploying docs with    Cloudflare Pages

Latest commit:	0dcaec4
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[janpio]

Definitely improves it for the "bigger" headlines, but for smaller ones the padding is now "missing" that makes the grey background detectable visually. For example on https://fix-inline-code.docs-51g.pages.dev/about/docs-components/frontmatter

[janpio]

Another example where it is now a bit too little:

(left old, right new)

[github-actions]

original	preview
content/200-orm/200-prisma-client/200-special-fields-and-types/100-working-with-json-fields.mdx	content/200-orm/200-prisma-client/200-special-fields-and-types/100-working-with-json-fields.mdx
content/200-orm/800-more/600-help-and-troubleshooting/100-help-articles/700-netlify-caching-issue.mdx	content/200-orm/800-more/600-help-and-troubleshooting/100-help-articles/700-netlify-caching-issue.mdx