Build breaks when I try do nested folders

[nikitavoloboev]

Just did this commit: nikitavoloboev/docs@86b98de

And build broke with:

I tried to have nested folder with .mdx inside, thought that was supported.

Is how my content structure looks:

[fuma-nama]

It's pretty clear, you need title frontmatter

[nikitavoloboev]

a I think I read it and didn't think it was about front matter

maybe better error would be title: Required in frontmatter with link to docs