docs: Tidy custom-queries page for tone and style
Tidy the custom-queries page, and bring it closer to GitLab tone and style.
- Add metadata to the top of the page.
- Horizontal spacing of tables to make them easier to read.
- Change the values of 'Required' from false/true to yes/no to follow conventions in the
gitlab
repo - Rephrase from
WIP
toDraft
to follow changes in thegitlab
repo
Related links
Related to #511 where I proposed cleaning up the VS Code extension documentation.
Edited by Amy Qualls