update exception to guidance schedule

data/support-and-assistance.md

@@ -23,7 +23,7 @@ The 2024 course will offer guidance at both the Kumpula campus and on Discord. T
 
 In the table **Campus** means that the guidance session will be on campus, **Discord** means its remotely on Discord. During the on-campus sessions there might be help available also on Discord if the assistants have time to follow the course Discord.
 
-**The Guidance will be on a break between March 28th and April 3rd due to easter.**
+**The guidance sessions on June 4th and June 6th are exceptionally canceled. Instead, a replacement session will be held on Friday, June 7th from 2:00 PM to 4:00 PM (UTC+3) on Campus/Discord..**
 
 *The schedule is subject to change.*