Remove markdown h1 and h2 bottom borders

Annabel Dunstone Grayrequested to merge
markdown-remove-borders into master

What does this MR do and why?

Removes bottom border from markdown h1 and h2

Why?

There are a lot of horizontal lines in areas where this markdown is most commonly used (issue/MR descriptions, long comments etc). It looks slightly unpolished having these untethered lines floating about.

Screenshots or screen recordings

Before After
Screenshot_2025-08-05_at_1.03.01_PM Screenshot_2025-08-05_at_12.59.47_PM

How to set up and validate locally

Add h1 and h2 headers in any markdown

Links

Edited by Annabel Dunstone Gray

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