Why is the file always in front of the folder in the auto-generated navigation

[shu307]

I'm trying to organize auto-generated navigation with numbers.

here is my mkdocs.yml
--from google translate

site_name: My Docs
theme:
    name: material
    palette:
        primary: white
    font: false
    language: zh
    features:
        - navigation.instant
        - navigation.tracking
        - navigation.tabs
        - navigation.expand

markdown_extensions:
    - pymdownx.highlight:
        anchor_linenums: true
    - pymdownx.inlinehilite
    - pymdownx.snippets
    - pymdownx.superfences

[squidfunk]

Does this also happen with the mkdocs or readtheodcs theme? If it does, please take your question upstream to MkDocs.