fix incorrect serve script

Author: dario-piotrowicz

apps/site/package.json

@@ -4,7 +4,7 @@
   "scripts": {
     "scripts:release-post": "cross-env NODE_NO_WARNINGS=1 node scripts/release-post/index.mjs",
     "dev": "npm run build-blog-data:watch & sleep 1 && cross-env NODE_NO_WARNINGS=1 next dev",
-    "serve": "npm run build-blog-data:watch & sleep 1 && npm run dev",
+    "serve": "npm run dev",
     "prebuild": "npm run build-blog-data",
     "build": "cross-env NODE_NO_WARNINGS=1 next build",
     "start": "cross-env NODE_NO_WARNINGS=1 next start",