code: function getExpressRoutePrefix(site) {
    let prefix = site.host;
  
    if (site.path.length > 1) {
      prefix += site.path;
    }
  
    return prefix;
  }
docs: Get the prefix that normalizes the slash on the path with the expectation that references to routes using the prefix
  will start with a slash as well.
  
  @param {object} site
  @returns {string}