Fix autofix for max-empty-lines

[gxmzjxk]

Clearly describe the bug

When I run stylelint src/**/*.less，I got the follow error:

 13:1  ✖  Expected no more than 1 empty line   max-empty-lines
 34:1  ✖  Expected no more than 1 empty line   max-empty-lines

After I run stylelint src/**/*.less --fix，then I run stylelint src/**/*.less，I still got the above error.

Which rule, if any, is the bug related to?

#4232

What CSS is needed to reproduce the bug?

// 红色
@red-1: #ffd1d1;
@red-3: #ff8585;
@red-5: #f04142;


// 法式-洋红
@magenta-5: #f2c8fa;
@magenta-5: #e26bfa;
@magenta-5: #db24ff;

What stylelint configuration is needed to reproduce the bug?

{
    extends: [
        'stylelint-config-standard'
    ],
    rules: {
        // 缩进 4 个空格
        indentation: 4
    },
    ignoreFiles: [
        '**/*.png|eot|ttf|woff',
        '**/*.js|jsx|ts|tsx',
        'docs/**',
        'scripts/**'
    ]
}

Which version of stylelint are you using?

11.0.0

How are you running stylelint: CLI, PostCSS plugin, Node.js API?

stylelint src/style/variables/private_colors.less --fix

Does the bug relate to non-standard syntax (e.g. SCSS, Less etc.)?

none

What did you expect to happen?

After run stylelint --fix，stylelint can pass.

What actually happened (e.g. what warnings or errors did you get)?
The following warnings were flagged:

src/style/variables/private_colors.less
 13:1  ✖  Expected no more than 1 empty line   max-empty-lines
 34:1  ✖  Expected no more than 1 empty line   max-empty-lines

[hudochenkov]

Thanks for the report and for using the template.

Marking as “help wanted”, consider contributing a fix.

[ybiquitous]

via #5507