Fix example code in Readme_zh-CN.md

[fwgood]

Problem

There are differences between the Chinese and English readme, and the Chinese sample code cannot sit properly.

// En
const { program } = require('commander');

program
  .option('--first')
  .option('-s, --separator <char>')
  .argument('<string>');

program.parse();

const options = program.opts();
const limit = options.first ? 1 : undefined;
console.log(program.args[0].split(options.separator, limit));

// Cn
const { program } = require('commander');

program
  .option('--first')
  .option('-s, --separator <char>');

program.parse();

const options = program.opts();
const limit = options.first ? 1 : undefined;
console.log(program.args[0].split(options.separator, limit));

Solution

Use English sample code in the Chinese version。

ChangeLog

[shadowspawn]

Thanks

[shadowspawn]

(I'll prepare a release with PR #2312 soon and this can get promoted to master branch with that.)