📝 Updated multi-page docs

[CrazyWolf13]

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Overview

As wished by many users make the docs to create mutiple pages a bit more understandable, altough the steps are actually pretty straightforward.

Issue Number (if applicable) #1421

Code Quality Checklist (Please complete)

• [x] All changes are backwards compatible
• [x] All lint checks and tests are passing
• [x] There are no (new) build warnings or errors
• [ ] Bumps version, if new feature added