code: function getMarkedId (text) {
    return entities.decode(text)
      .toLowerCase()
      .trim()
      .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~_]/g, '')
      .replace(/\s/g, '-')
  }
docs: getMarkedId - anchors used in `npm i marked`
  @private
  @see: https://github.com/markedjs/marked/blob/master/lib/marked.js#L1306