typo: 增加夜间模式，晚上阅读对眼睛友好一点

[George167]

章节

config.mts

小节

defineConfig

原文片段

export default defineConfig({
lang: 'zh-CN',
title: 'XQuant Beginner',
description: '《XQuant：人人都是量化交易员》开源书稿',
base: process.env.VITEPRESS_BASE || '/',
cleanUrls: true,
lastUpdated: true,

建议修改

export default defineConfig({
lang: 'zh-CN',
title: 'XQuant Beginner',
description: '《XQuant：人人都是量化交易员》开源书稿',
base: process.env.VITEPRESS_BASE || '/',
cleanUrls: true,
lastUpdated: true,
appearance: true,