docs(self-hosted configuration): rewrite sections

[HonkingGoose]

Changes

• Rewrite some sections to:
  • Focus on the reader by using you
  • Use simpler words
  • Use simpler sentences
  • Use lists
  • Replace e.g. with for example
  • Use must where things are required
  • Use monospaced font for true Boolean

Context

Drive by PR, not closing any issue with this.

Documentation (please check one with an [x])

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

How I've tested my work (please tick 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

[astellingwerf]

Nice improvements!

[renovate-release]

🎉 This PR is included in version 32.71.4 🎉

The release is available on:

• GitHub release
• 32.71.4

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