Update details-confirmation.md

Author: andrewiggins

app/md/email-templates/details-confirmation.md

@@ -9,6 +9,8 @@ Here's what you need to know:
 
 As a reminder, please arrive at the venue, {venue}, by 5:00PM for a tech check.
 
+---
+
 Before we publish the event details, we'd like to confirm your information. Here's the details from your submission - is there anything you'd like to change or are you happy with it as is?
 
 - **Name**: {name}