[TASK] Use code editor in styleguide examples

Resolves: #104080
Releases: main
Change-Id: I83b5f8dfabb32b584300066ea52a97b5917ca6c4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84677


Tested-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>