整理代码，return后面跟空格

parts/modes/backfire_u.lua

@@ -1,4 +1,4 @@
-return{
+return {
     env={
         drop=2,lock=30,
         freshLimit=10,
@@ -13,7 +13,7 @@ return{
         end,
         bg='blockhole',bgm='echo',
     },
-    score=function(P) return{math.min(math.floor(P.stat.atk),100),P.stat.time} end,
+    score=function(P) return {math.min(math.floor(P.stat.atk),100),P.stat.time} end,
     scoreDisp=function(D) return D[1].." Attack  "..STRING.time(D[2]) end,
     comp=function(a,b) return a[1]>b[1] or a[1]==b[1] and a[2]<b[2] end,
     getRank=function(P)