Sections disappear if _index.md contains title with space in it

[UppaJung]

A title with a space in the _index.md of a section (e.g., "About Me" rather than "About") causes the entire section not to be rendered.

[lukeorth]

@UppaJung, sorry for my delay in getting to this issue. Thank you for reporting this!

I updated the menu logic and confirmed that the issue is fixed (screenshots below).

Demo site screenshot

toml.config

Section structure

Content

[UppaJung]

Awesome. Thanks @lukeorth.