Add MM 2024 first place winner last name (#7)

Author: KiaanCastillo

public/events/2024/mm/index.html

@@ -269,7 +269,7 @@ <h2>Winners</h2>
       <br />
       <h3>First place: PeakBuddies</h3>
       <p>
-        By <i>Zachary Chan, Kian Hosseinkhani, Kiaan, Peiman Zhiani</i><br />
+        By <i>Zachary Chan, Kian Hosseinkhani, Kiaan Castillo, Peiman Zhiani</i><br />
         <a href='https://github.com/Mountain-Madness-24/peakbuddies' style='color: #8080a0;'>
           See Project
         </a>