add lunch deadline (#70)

Author: tanjz12

content/events/bmmt-2026.md

@@ -185,7 +185,7 @@ reliable for navigating campus.
 This year, we are offering lunch for students, coaches, and parents at $12 per
 person, catered from [Crave Subs](https://www.cravesubs.com/), a sandwich store
 local to Berkeley. Those who wish to take this option **must pre-order on
-ContestDojo** through their coach. There are three menu items to choose from:
+ContestDojo** through their coach by **Friday, April 3**. There are three menu items to choose from:
 
 - Ned Flanders — Turkey, Crave Sauce, Lettuce, & Tomato
 - Mr. Incredible — Pastrami, Crave Sauce, Lettuce, & Tomato