fix some mistakes in Chinese language

descriptions/rep/zh_cn.lua

@@ -49,6 +49,7 @@ local repCollectibles={
 	[79] = {"79", "咒印", "↑ +1.0伤害#↑ +0.2移速#+1黑心"}, -- The Mark
 	[80] = {"80", "契约", "↑ +0.5伤害#↑ +0.7射速#+2黑心"}, -- The Pact
 	[83] = {"83", "钉子", "+半黑心#↑ +2.0伤害#↓ -0.18移速#造成接触伤害#粉碎经过的岩石"}, -- The Nail
+	[84] = {"84", "我们需要深入挖掘！", "生成1个跳过所在层的活板门#如果在有装饰(草、碎石、宝石、骷颅头等)的地板上使用则改为生成一个暗门"}, -- We Need To Go Deeper!
 	[87] = {"87", "洛基的角", "25%几率向4个方向发射眼泪#运气15：100%几率"}, -- Loki's Horns
 	[91] = {"91", "探窟帽", "揭示相邻房间的类型#也可以揭示隐藏房，超级隐藏房和小Boss房#阻挡上方弹幕的伤害"}, -- Spelunker Hat
 	[98] = {"98", "圣遗物", "每7-8个房间生成1魂心"}, -- The Relic