Documentation improvements - feedback

[jonaseberle]

These improvements were suggested by TYPO3 GmbH and Documentation team:

Review:

• guide the user in the horizontal direction by comparing this extension to
  similar ones of the TER and exposing its benefit: there is also
  dirkpersky/typo3-dp_cookieconsent and other cookie extensions

  • see example:
    https://github.com/b13/container#why-did-we-create-another-grid-extension

• no page should contain only a menu: there should always be text guiding
  the user

• good:

  • very clear writing and formatting

  • many examples

  • code-rich

  • gives a feeling of a solid programming

[jonaseberle]

Also check what needs changing to follow the new extension documentation guidelines. (https://typo3.org/article/standardization-of-typo3-documentation-may-2022)