chore: update package.json

Author: jaywcjlove

package.json

@@ -7,6 +7,7 @@
   "typings": "lib/esm/index.d.ts",
   "homepage": "https://uiwjs.github.io/react-codesandbox/",
   "scripts": {
+    "prepare": "npm run build:lib",
     "doc": "kkt build --app-src ./website",
     "start": "kkt start --app-src ./website",
     "build": "npm run build:lib && npm run doc",