The only "convention" that exists is the Conventional Commits' one. It is sensible and compatible with some tools. As long as you write "fix:", "feat:" or "chore:" you'll be fine.

Don't overthink it though, it's a thing that is used in some open-source projects and companies. As long as you follow the rules of the project, you'll be fine. Same for the coding style and format, do like everyone else.