Fix demo

Author: lxsmnsyc

examples/demo/package.json

@@ -1,5 +1,6 @@
 {
   "name": "demo",
+  "type": "module",
   "version": "0.11.0",
   "scripts": {
     "dev": "vite",
@@ -10,7 +11,7 @@
     "typescript": "^5.3.3",
     "unplugin-solid-styled": "0.11.0",
     "vite": "^5.0.11",
-    "vite-plugin-solid": "^2.8.0"
+    "vite-plugin-solid": "2.8.0"
   },
   "dependencies": {
     "solid-js": "^1.8.11",