
## What is this PR for? After recent changes in `rustaceanvim` in https://github.com/mrcjkb/rustaceanvim/pull/403, `checkOnSave` is supposed to be boolean and the table that we were passing to `checkOnSave` previously should be passed to `check` instead. I left the `check` table undefined, because the options that we were passing to `checkOnSave` before are the default ones being passed to `check`. So, only if the user wants to change something should he change the values of the `check` table according to what he wants. ## Does this PR fix an existing issue? No ## Checklist - [x] I've read the [CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md) guidelines.