chore: improve niuzi bank command

src/main/kotlin/cn/rtast/fancybot/commands/niuzi/NiuziSignCommand.kt

@@ -9,6 +9,7 @@ package cn.rtast.fancybot.commands.niuzi
 
 import cn.rtast.fancybot.annotations.CommandDescription
 import cn.rtast.fancybot.niuziManager
+import cn.rtast.fancybot.util.getUserName
 import cn.rtast.rob.entity.GroupMessage
 import cn.rtast.rob.util.BaseCommand
 import cn.rtast.rob.util.ob.MessageChain
@@ -23,7 +24,7 @@ class NiuziSignCommand : BaseCommand() {
             message.reply("你今天已经对你的牛子使用了签到啦,明天再来吧~")
             return
         }
-        val username = listener .getUserName(message.groupId, message.sender.userId)
+        val username = listener.getUserName(message.groupId, message.sender.userId)
         val afterStatus = niuziManager.sign(message.sender.userId, username)
         val msg = MessageChain.Builder()
             .addReply(message.messageId)