chore: format code

src/main/kotlin/cn/rtast/fancybot/commands/EchoCommand.kt

@@ -11,7 +11,7 @@ import cn.rtast.rob.entity.GroupMessage
 import cn.rtast.rob.util.BaseCommand
 import cn.rtast.rob.util.ob.OBMessage
 
-class EchoCommand: BaseCommand() {
+class EchoCommand : BaseCommand() {
     override val commandNames = listOf("/echo")
 
     override suspend fun executeGroup(listener: OBMessage, message: GroupMessage, args: List<String>) {