Core/Players: Rename "heroic character" to "death knight"

src/server/scripts/Commands/cs_reset.cpp

@@ -128,7 +128,7 @@ public:
         // set starting level
         uint32 startLevel = target->getClass() != CLASS_DEATH_KNIGHT
             ? sWorld->getIntConfig(CONFIG_START_PLAYER_LEVEL)
-            : sWorld->getIntConfig(CONFIG_START_HEROIC_PLAYER_LEVEL);
+            : sWorld->getIntConfig(CONFIG_START_DEATH_KNIGHT_PLAYER_LEVEL);
 
         target->_ApplyAllLevelScaleItemMods(false);
         target->SetLevel(startLevel);