Reduce spacing between consecutive <dt> elements

[FloEdelmann]

What are you trying to accomplish?

See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dt:

multiple <dt> elements in a row indicate several terms that are all defined by the immediate next <dd> element

Example usage on GitHub: https://github.com/tummychow/git-absorb/blob/master/Documentation/git-absorb.adoc

Currently, those are separated by a 1rem margin, making them look like separate definitions (without a description):

What approach did you choose and why?

Reduce the spacing between consecutive <dt> elements to zero:

This is a similar approach to consecutive <li> elements and makes definition lists more readable.

What should reviewers focus on?

–

Can these changes ship as is?

• Yes, this PR does not depend on additional changes. 🚢

[changeset-bot]

🦋 Changeset detected

Latest commit: 47431de

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

This PR includes changesets to release 1 package

Name	Type
@primer/css	Minor

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