Streamline pointer notation (#2139)

src/shop.c

@@ -369,7 +369,7 @@ static u8 CreateShopMenu(u8 martType)
     return CreateTask(Task_ShopMenu, 8);
 }
 
-static void SetShopMenuCallback(void (* callback)(void))
+static void SetShopMenuCallback(void (*callback)(void))
 {
     sMartInfo.callback = callback;
 }