`nav_links`: a set of navigation links to be displayed in the sidebar (or at the top on mobile). You can set `"target": "_blank"` to make the link open in new tabs, while omitting this attribute will make the link behave as a normal link, that is, open in the current page.
`itte_url`: OPTIONAL. A URL to your [Itte](https://github.com/PeterCxy/itte) instance, the comment system.