docs(linter): oxlint-migrate is ready for the world (#334)

Author: Sysix

src/docs/guide/usage/linter.md

@@ -101,7 +101,6 @@ See [Configuration File](./linter/config)
 ## Migrate from eslint flat config
 
 If you have an existing `eslint.config.*` file, you can convert it to an `.oxlintrc.json` config with [oxlint-migrate](https://github.com/oxc-project/oxlint-migrate).
-This script is still under development, please recheck the generated config file.
 
 ## Integration