docs(sdk): update release notes

Author: Bullle

playground/misc/misc-3-release-notes.md

@@ -6,7 +6,7 @@ The CodinGame SDK is regularly updated and improved. This document lets you know
 
 ### 🐞 Bug fix
 
-- turn start at 1 instead of 0
+- The `turn` argument of the Referee's `gameTurn()` now starts at 1 instead of 0
 
 ## 3.4.7