fix(武器/火山): 调整火山武器的伤害系数和描述

降低火山武器各段伤害的成长系数和基础值，并同步更新描述文本中的伤害百分比

scripts/Contents/Weapons/Volcano.gd

@@ -3,11 +3,11 @@ extends Weapon
 
 func update(to: int, origin: Dictionary, _entity: EntityBase):
 	origin["rotate"] += 0.005 * to * soulLevel
-	origin["dmg1"] += 0.02 * to * soulLevel
-	origin["dmg2"] += 0.02 * to * soulLevel
-	origin["dmg3"] += 0.02 * to * soulLevel
-	origin["dmg4"] += 0.02 * to * soulLevel
-	origin["dmg5"] += 0.02 * to * soulLevel
+	origin["dmg1"] += 0.01 * to * soulLevel
+	origin["dmg2"] += 0.01 * to * soulLevel
+	origin["dmg3"] += 0.01 * to * soulLevel
+	origin["dmg4"] += 0.01 * to * soulLevel
+	origin["dmg5"] += 0.01 * to * soulLevel
 	origin["count"] = 1 * soulLevel
 	origin["atk"] += 1 * to * soulLevel
 	return origin