MediaWiki works on wikitext and templates (and will also accept HTML elements, but deference is almost always given to the former two instead). There’s no reason for it to support Markdown, as it can do everything Markdown can and more, and the VisualEditor extension (shipped by default) gives you a WYSIWYG editing experience should you not want to edit the source directly.
MediaWiki works on wikitext and templates (and will also accept HTML elements, but deference is almost always given to the former two instead). There’s no reason for it to support Markdown, as it can do everything Markdown can and more, and the VisualEditor extension (shipped by default) gives you a WYSIWYG editing experience should you not want to edit the source directly.