hours: Correct user-submitted hours

Author: rye

data/building-hours/3-1-post-office.yaml

@@ -7,7 +7,7 @@ schedule:
     closedForChapelTime: true
     hours:
       - {days: [Mo, Tu, We, Th, Fr], from: '8:00am', to: '5:00pm'}
-      - {days: [Sa], from: '10:00am', to: '3:00pm'}
+      - {days: [Sa], from: '10:00am', to: '1:00pm'}
 
 breakSchedule:
   fall: []