Add BC-folder-note-subfolders to wiki

Is your feature request related to a problem? Please describe.
I'm really struggling to understand how I'm supposed to use BC-folder-note-subfolders and even the way BC-folder-note works seems inconsistent with the wiki...

Describe the solution you'd like
Add a clear example of these properties being used to the wiki so it's easier to understand.

Describe alternatives you've considered
I've already tried searching but couldn't find any clear explanation of the feature.

Hey, thanks for the issue! To confirm, are you on v3 or v4 of Breadcrumbs? There are a couple differences in how folder notes work there. But either way, I could definitely clarify the docs

are you on v3 or v4 of Breadcrumbs?

I got the plugin from within Obsidian, so I'm on v3.6.11

There are a couple differences in how folder notes work there

Oh, alright. Could you quickly tell me what those are?

I could definitely clarify the docs

That would be great, thanks!

Alright, that's the current "production" version. I'm working on v4 at the moment, which is in beta, available via the BRAT plugin. Two differences so far:

1. The field is now called BC-folder-note-field
2. You can use BC-folder-note-recurse: true to enable subfolder recursion (without this, only the immediate children notes in a folder will be connected

Consider updating to V4, after reading the V4.md file in the root of the repo

I've rewritten the README and it explains Folder Notes better now. I'm gonna close this out, even though v4 isn't in production yet, the docs are up to date