Update Participant_Email.md

Usability_Testing/Participant_Email.md

@@ -13,13 +13,15 @@ __[Appointment time]__
 
 The study will be conducted via web conference.  You will need a working web camera, microphone, and speakers on your
 computer in order to participate.  We also ask that you sit in a space that is reasonably quiet and free from
-distractions during the study.  We ask that you are comfortable with your speaker or headphone setup before joining the
+distractions during the study.  Please make sure that you're comfortable with your speaker or headphone setup before joining the
 session.
 
 To ensure that you’re fully prepared for your session, please complete these final steps:
 
 __[Steps to set up your web conference or screen sharing software.]__
 
-On __[the day before the appointment]__, I will follow up with a session reminder.
-
 If you have any questions, please don’t hesitate to contact me.
+
+Sincerely, 
+
+__[Moderator]__