[8.0] better place to document token toggle

[andresailer]

BEGINRELEASENOTES

*Doc
FIX: Move the explanation how to enable tokens to a place that is shown in ReadTheDocs in the end.

ENDRELEASENOTES

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/9611528688

Failed:

• integration
  cherry-pick 93ca768 into integration failed
  check merge conflicts on a local copy of this repository

  git fetch upstream
  git checkout upstream/integration -b cherry-pick-2-93ca76813-integration
  git cherry-pick -x -m 1 93ca76813
  # Fix the conflicts
  git cherry-pick --continue
  git commit --amend -m 'sweep: #7685 better place to document token toggle' --author='Andre Sailer <andre.philippe.sailer@cern.ch>'
  git push -u origin cherry-pick-2-93ca76813-integration
  
  # If you have the GitHub CLI installed the PR can be made with
  gh pr create \
       --label 'sweep:from rel-v8r0' \
       --base integration \
       --repo DIRACGrid/DIRAC \
       --title '[sweep:integration] better place to document token toggle' \
       --body 'Sweep #7685 `better place to document token toggle` to `integration`.
  
  Adding original author @andresailer as watcher.
  
  BEGINRELEASENOTES
  
  *Doc
  FIX: Move the explanation how to enable tokens to a place that is shown in ReadTheDocs in the end.
  
  
  ENDRELEASENOTES
  Closes #7686'