fix: Marshmallow isn't available rn

Author: louis1706

EXILED/Exiled.API/Enums/EffectType.cs

@@ -216,7 +216,7 @@ public enum EffectType
         /// <summary>
         /// Makes you a marshmallow guy.
         /// </summary>
-        // [Obsolete("Not functional in-game")]
+        [Obsolete("Only availaible for Halloween")]
         Marshmallow,
 
         /// <summary>