Fix Best Streak stat name

src/field_specials.c

@@ -1234,9 +1234,9 @@ void GetSecretBaseNearbyMapName(void)
     GetMapName(gStringVar1, VarGet(VAR_SECRET_BASE_MAP), 0);
 }
 
-u16 GetBestBattleTowerStreak(void)
+u16 GetBattleTowerSinglesStreak(void)
 {
-    return GetGameStat(GAME_STAT_BATTLE_TOWER_BEST_STREAK);
+    return GetGameStat(GAME_STAT_BATTLE_TOWER_SINGLES_STREAK);
 }
 
 void BufferEReaderTrainerName(void)