修复接口文档bug

‘liusuyi’

2023-07-22 ef2c3b3e0dbd683dfd75b55eb538914eecd2b6fa

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var userAgent = require('../internals/engine-user-agent');
 
var firefox = userAgent.match(/firefox\/(\d+)/i);
 
module.exports = !!firefox && +firefox[1];