Docs team updates

[infinisil]

• Remove myself from the docs team, I'm focusing on other tasks!
• Add @djacu, he's agreed to join the team in today's meeting :)

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/2024-05-16-documentation-team-meeting-notes-128/45537/1