docs(config): extend configuration example OM-521

[GAlexIHU]

Overview

Updates config.example.yaml to include all configurable properties alongside their descriptions. Onwards, care should be taken when configuration changes, to validate the example is always up to date with reality.

Fixes #(issue) OM-521

Notes for reviewer

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes