how to enable lsp support for vitepress or PetiteVue? is there a tutorial?

[sixwaaaay]

2.0.15 (2024/4/30)
Features
Redesign additional extensions, VitePress, PetiteVue support (#4321)
Fix custom file extensions not working in Hybrid Mode (#4251)
vscode: prompt when Hybrid Mode is explicitly enabled but known incompatible extensions are installed

According to the changelog, there is a vitepress lsp feature, but in the markdown file, lsp doesn't seem to work