text: Title: OperatingSystem library docs have broken link / title
  Body: https://robotframework.org/robotframework/latest/libraries/OperatingSystem.html contains three broken HTML snippets I could identify:
  One in Table of Contents:
  <img width="301" alt="Screenshot 2023-01-24 at 14 58 38" src="https://user-images.githubusercontent.com/13387304/214297779-7e728790-f913-4392-b824-2e4155698b9d.png">
  And two in the actual section where that link should go to. (one is the title of the section, other is the `[https://docs.python.org/3/library/pathlib.html pathlib.Path]` link showing inline)
  <img width="1120" alt="Screenshot 2023-01-24 at 14 58 52" src="https://user-images.githubusercontent.com/13387304/214297847-152ea93f-de57-4d8a-b956-5230d1a9dd60.png">
  