async function singleRandomQuote(req, res, next) {
  req.query.limit = 1
  const [result] = await getRandomQuotes(req.query, next)
  if (!result) return next(createError(404))
  res.status(200).json(result)
}
Controller for the `/random` endpoint.

- Gets a single random Quote matching the given parameters.
- Response is a single Quote object
- Responds with 404 error if no matching quotes are found