add calendar blurb

calendar.md

@@ -7,7 +7,6 @@ title: MDS Calendar
 
 
 Legend:
-
 - Blue: lectures
 - Dark red and green: labs
 - Grey: deadlines
@@ -17,3 +16,7 @@ Legend:
 
 
 Note: you can click the small arrow in the upper-right to turn off certain calendars (like lab sections you're not in). You can also import these calendars directly into your own Google Calendar by clicking the `+` at the lower-right of the calendar. If so, we suggest importing all calendars except for lab sections you're not in. After importing, you may need to select this calendar for sync [here](https://calendar.google.com/calendar/u/0/syncselect).
+
+<br>
+
+Note: Only current MDS students, faculty, and staff members can view all the calendar contents. If you have any questions, please get in touch with the course coordinator.