Mention the jupyterhub config file
@@ -64,7 +64,7 @@ you should put the following in ``requirements.txt`` or ``environment.yml``::
jupyterhub==0.8.*
If your instance of JupyterHub uses ``DockerSpawner``, you will need to set its
-command to run ``jupyterhub-singleuser``::
+command to run ``jupyterhub-singleuser`` by adding this line in your configuration file::
c.DockerSpawner.cmd = ['jupyterhub-singleuser']
