Fix midterm refs.

Author: dvanhorn

www/schedule.scrbl

@@ -29,7 +29,7 @@
 (list @day{6/9}  @secref["Fraud"] "")
 (list @day{6/12} @secref["Hustle"] @seclink["Assignment 3"]{A3})
 (list @day{6/13} @secref["Hoax"] "")
-(list @day{6/14} "Midterm 1" @secref{Midterm 1})
+(list @day{6/14} "Midterm 1" @secref["Midterm_1"])
 (list @day{6/15} @secref["Iniquity"] "")
 (list @day{6/16} @elem{@secref["Iniquity"], cont.} "")
 (list @day{6/19} @elem{Juneteenth Holiday} "")
@@ -39,7 +39,7 @@
 (list @day{6/23} @secref["Knock"] "")
 (list @day{6/26} @elem{@secref["Knock"], cont.} @seclink["Assignment 5"]{A5})
 (list @day{6/27} @elem{GC} "")
-(list @day{6/28} "Midterm 2" @secref{Midterm 2})
+(list @day{6/28} "Midterm 2" @secref["Midterm_2"])
 (list @day{6/29} @secref["Mug"] "") 
 (list @day{6/30} @secref["Mountebank"] "") 
 (list @day{7/3}  @secref["Neerdowell"] @seclink["Assignment 6"]{A6})