Add gunicorn with uvicorn workers to docs (#1766)

Fixes #1755

docs/quickstart.rst

@@ -194,7 +194,15 @@ You can run your application using an ASGI server such as `uvicorn`. If you defi
 
     $ uvicorn run:app
 
-or if you installed connexion using :code:`connexion[uvicorn]`, you can run it using the
+Or with gunicorn:
+
+.. code-block:: bash
+
+    $ gunicorn -k uvicorn.workers.UvicornWorker
+
+See the `uvicorn documentation`_ for more details.
+
+If you installed connexion using :code:`connexion[uvicorn]`, you can run it using the
 :code:`run` method. This is only recommended for development:
 
 .. code-block:: python
@@ -233,6 +241,8 @@ import string. In most cases, this can be achieved as follows:
             .. autofunction:: connexion.ConnexionMiddleware.run
                 :noindex:
 
+.. _uvicorn documentation: https://www.uvicorn.org/deployment/
+
 The Swagger UI
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