docs: function mdlink(anchor, href, title) {
    if (typeof anchor !== 'string') {
      throw new TypeError('markdown-link expects anchor to be a string.');
    }
    if (typeof href !== 'string') {
      throw new TypeError('markdown-link expects href to be a string.');
    }
  
    title = title ? ' "' + title + '"' : '';
    return '[' + anchor + '](' + href + title + ')';
  }