fix: remove double blank lines when not use eslintrc style

[hyperz111]

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request?

To fix double blank lines when NOT use eslintrc config style.

What changes did you make? (Give an overview)

Before:

// Import...
import { defineConfig } from "eslint";


export default defineConfig([
  // Config...
])

After:

// Import...
import { defineConfig } from "eslint";

export default defineConfig([
  // Config...
])

Related Issues

N/A

Is there anything you'd like reviewers to focus on?

N/A

[aladdin-add]

LGTM, thanks!