docs: markdown list structure not being transformed to `ul` HTML element

[mfranzke]

E.g. on the page https://design-system.deutschebahn.com/core-web/version/v2.0.2/components/data-display/tag/properties you'll notice that the following two list items within the description of the behaviour entry aren't being transformed to an ul-HTML-element:

• static: default behaviour without remove button
• removable: add a remove button at the end of the tag