Highlighting code syntax, markdown tables, mistaken text, etc

Hi,

When I try to insert something like code snippets, tables, mistaken text, etc, it looks like that it is not fully generated to html. Maybe some plugins like pygments are missing? Maybe current GitLab-Pages doesn't have these features yet? Maybe I'm missing something very obvious?

Any suggestions for an easy way to add standard markdown syntax features like ones mentioned in the beginning of post?

Thanks