docs: Update Swissquote article with information on the scheduler and dashboards

[onigoetz]

Changes

Hi, This PR (finally) updates my article with the figures from the screenshot and an explanation on how the scheduler works.

Context

This is following a discussion with @HonkingGoose in https://github.com/renovatebot/renovate/discussions/23105

Documentation (please check one with an [x])

• [x] I have updated the documentation, or
• [ ] No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• [ ] Code inspection only, or
• [ ] Newly added/modified unit tests, or
• [ ] No unit tests but ran on a real repository, or
• [ ] Both unit tests + ran on a real repository