chore: 更新 vitepress 到测试版本

Author: ckvv

package.json

@@ -75,7 +75,7 @@
     "typescript": "5.7.3",
     "vite": "^6.2.0",
     "vite-plugin-dts": "4.5.0",
-    "vitepress": "1.6.3",
+    "vitepress": "2.0.0-alpha.3",
     "vue": "^3.5.13"
   },
   "simple-git-hooks": {