Cleans up the captions on register diagrams (no more thick <code> tags inside them)
Reduces the overall size of the monospaced font to fit better alongside regular text
Before
![Screenshot from 2024-02-04 19-45-13](https://github.com/gbadev-org/tonc/assets/569607/24cd2768-34e2-4f0f-bd02-2ddd97967a3c)
After
![Screenshot from 2024-02-04 19-33-35](https://github.com/gbadev-org/tonc/assets/569607/395258bd-c827-42d5-9830-e2355fd57ef9)
This contributes towards solving #95 but doesn't quite address the contrast issue on table borders which @djedditt mentioned.
This PR:
<code>
tags inside them)Before
![Screenshot from 2024-02-04 19-45-13](https://github.com/gbadev-org/tonc/assets/569607/24cd2768-34e2-4f0f-bd02-2ddd97967a3c)After
![Screenshot from 2024-02-04 19-33-35](https://github.com/gbadev-org/tonc/assets/569607/395258bd-c827-42d5-9830-e2355fd57ef9)This contributes towards solving #95 but doesn't quite address the contrast issue on table borders which @djedditt mentioned.