docs: sync xquant tutorial updates

.vitepress/config.mts

@@ -20,16 +20,16 @@ export default defineConfig({
         items: [
           { text: '项目首页', link: '/' },
           { text: '前言', link: '/book/preface' },
-          { text: '开始动手之前', link: '/book/getting-started' },
-          { text: '第 1 章：第一次跑通一个完整策略', link: '/book/q1-how-to-profit' },
-          { text: '第 2 章：选出你的投资宇宙', link: '/book/q2-what-to-buy' },
-          { text: '第 3 章：给 ETF 分钱', link: '/book/q3-how-much' },
-          { text: '第 4 章：给策略加规则', link: '/book/q4-when-to-trade' },
-          { text: '第 5 章：策略好不好？', link: '/book/q5-how-to-validate' },
-          { text: '第 6 章：看清好看的回测', link: '/book/q6-avoid-overfitting' },
-          { text: '第 7 章：真的下单', link: '/book/q7-execution' },
-          { text: '第 8 章：让策略活着', link: '/book/q8-iteration' },
-          { text: '第 9 章：持续寻找盈利机会', link: '/book/q9-daily-work' },
+          { text: '准备工作', link: '/book/getting-started' },
+          { text: '第 1 章：跑通第一个策略', link: '/book/q1-how-to-profit' },
+          { text: '第 2 章：先选买什么：从 3 只 ETF 开始', link: '/book/q2-what-to-buy' },
+          { text: '第 3 章：决定各买多少：3 种分法实测', link: '/book/q3-how-much' },
+          { text: '第 4 章：决定何时买卖：再平衡、止损、止盈', link: '/book/q4-when-to-trade' },
+          { text: '第 5 章：判断策略好不好：4 个关键视角', link: '/book/q5-how-to-validate' },
+          { text: '第 6 章：别高兴太早：防止过拟合', link: '/book/q6-avoid-overfitting' },
+          { text: '第 7 章：从理想到现实：执行交易', link: '/book/q7-execution' },
+          { text: '第 8 章：策略跑起来以后：监控、诊断、迭代', link: '/book/q8-iteration' },
+          { text: '第 9 章：持续寻找机会：因子研究入门', link: '/book/q9-daily-work' },
           { text: '反馈与读者群', link: '/book/feedback' }
         ]
       }