code-of-conduct.md:
Replace the in-document links for the specific fora guidelines with a
link to the "General guidelines" wiki article
(https://wiki.archlinux.org/title/General_guidelines) and move it to a
"Further reading" section.
Point out that guidelines for the specific communication channels are
not part of the Terms of Service.
Add a notice to the "Further reading" section that users are expected to
review the respective communication channel guidelines before each use
of any of the communication channels.
Add note to the "Further reading" section, that changes to links in that
section and the guidelines themselves may change outside of the 30 days
notice period of changes to the Code of Conduct itself.