Markdown itself is almost a (very) small subset of HTML, which is rendered as such. We use markdown on many places, including on the whole Stack Exchange network and Github. Sometimes, it is a good idea to ask for a review on the quality of the markdown.
Are those questions on-topic here?
In my opinion, they are since they have a defined structure with specific parameters. And since questions about HTML are on-topic, that made me think about it.