[Docs] Update udev rules to use TAG+="uaccess".

[petejohanson]

Description

• udev for several years now has supported "dynamic" permissions
  for device access for the logged in user, that avoids needing
  custom groups, or making devices world writable.
• Update the docs for udev rules to use the "newer" uaccess
  approach.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

• N/A

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[zvecr]

lib/python/qmk/cli/doctor.py needs updating to reflect these docs changes, though this might then cause issue as how do we tell users they need to update existing files content.

[petejohanson]

lib/python/qmk/cli/doctor.py needs updating to reflect these docs changes, though this might then cause issue as how do we tell users they need to update existing files content.

@zvecr Any objections to updating that Python code to be able to fallback to detecting the "old" version, and allowing it, but warning in that scenario about updating them?

[Erovia]

I've opened #9080 for the qmk doctor part.