Decision day name and description tweaks for 5.1

Author: garethyr

Data/Missions.rte/MissionActivities.ini

@@ -66,9 +66,9 @@ AddActivity = GAScripted
 
 
 AddActivity = GAScripted
-	PresetName = Decision Day
+	PresetName = Decision Day (Beta)
 	SceneName = Decision Day
-	Description = Strike the enemy fortress and destroy its controller unit!
+	Description = Battle through a massive fortress to destroy the enemy's brain and get revenge! NOTE - this mission's performance will be improved in future versions.
 	ScriptPath = Missions.rte/Activities/DecisionDay.lua
 	InCampaignStage = 1
 	LuaClassName = DecisionDay