docs: upgrade vitepress

Author: raykyri

package-lock.json

@@ -37,7 +37,7 @@
     "react-chessboard": "^4.3.2",
     "typescript": "^5.3.2",
     "veaury": "^2.3.12",
-    "vitepress": "^1.0.0-rc.24",
+    "vitepress": "^1.0.0-rc.31",
     "vue": "^3.3.7",
     "vue-markdown-render": "^2.1.1"
   },