Update request-course.rst

Author: Gehock

aalto/jupyterhub-instructors/request-course.rst

@@ -49,7 +49,8 @@ YAML, by the way (but we can handle the syntax details).
    contact: [[email protected], [email protected]]
    # (optional) has rights to add other TAs via
    # domesti.cs.aalto.fi (supervisor is always a manager)
-   #manager: [[email protected]]
+   # Uncomment below to add extra managers
+   # manager: [[email protected]]
 
    # if true, create a separate data directory
    datadir: false