Navigation from the index.mdx is corrupt in groups

[complynx]

If I have a group consisting of an some/index.mdx and some/other.mdx files, and I navigate to some/index.mdx through links or through the menu, clicking directly onto the page — the address is example.com/docs/some, but if I navigate to it through another level of the menu, clicking on the group itself, it will navigate to example.com/docs/some/index.

This results in corrupt behavior of the index page links, because in the first scenario all the relative links must have their parent folder included, in the second — they must not.

Solution: when removing /index from the paths, remove it without /, so that the browser will understand that the last path part is a directory.