"Edit this page" links broken

[jaller94]

https://gbdev.io/guides/tools.html

The link "Edit this page" 404s.
It goes to
https://github.com/gbdev/gbdev.github.io/edit/main/guides/tools.md

I guess it should link the dev branch instead of main.

[jaller94]

Vuepress 2.0 defaults to the main branch.

Here is the documentation of the config option:
https://v2.vuepress.vuejs.org/reference/default-theme/config.html#docsbranch