chore: bump vitepress to 2.0.0-alpha.20 and wrangler (#60)

Author: yanglbme

package.json

@@ -22,8 +22,8 @@
   },
   "devDependencies": {
     "typescript": "^7.0.2",
-    "vitepress": "2.0.0-alpha.19",
-    "wrangler": "^4.125.0"
+    "vitepress": "2.0.0-alpha.20",
+    "wrangler": "^4.131.1"
   },
   "scripts": {
     "docs:dev": "vitepress dev docs",