Quick Save Button is not aligned with Quick Load Button

Reported on discord.

> is the quick save/load buttons being aligned like this normal?
> 

I checked and in the ['MainUI' image](https://github.com/07th-mod/ui-editing-scripts/blob/master/assets/images/shared/MainUI.png), the button is indeed 1 pixel too high compared to the vanilla button.


I'm pretty sure only the top two 'quick save' buttons need to be changed, the bottom four buttons are fine.

该 issue 是关于“快速保存”按钮图像与“快速加载”按钮相比存在 1 像素的错位问题。需要编辑的图像是 assets/images/shared 目录下的 'MainUI.png'。请直观比较按钮位置，调整顶部的两个“快速保存”按钮以与“快速加载”按钮对齐，并确保底部的四个按钮保持不变。测试包括在游戏的 UI 上下文中检查编辑后的图像。

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