add expression of interest form, event date

Author: neagualexa

docs/events/20260627_fol_kor_26.md

@@ -1,5 +1,5 @@
 # Build and Deploy Microservices for Automated Feedback
-Tutorial at Festival of Learning 2026, South Korea
+Half-day tutorial at Festival of Learning 2026, South Korea on either Saturday, June 27 & Sunday, June 28 (date and time to be confirmed)
 
 **Alexandra Neagu¹, Peter B. Johnson¹, Marcus Messer¹, Fun Siong Lim²**
 
@@ -9,6 +9,8 @@ Tutorial at Festival of Learning 2026, South Korea
 
 ---
 
+**Expression of interest: [form link](https://forms.office.com/e/jaA4ABacnH)**
+
 ### Key Information
 
 We present a half-day hands-on tutorial to design, implement, and deploy an education microservice to evaluate student submissions to learning tasks and provide automated feedback.