fix nextjs typing

Author: timlrx

examples/next-rsc-dynamic/app/page.tsx

@@ -1,7 +1,7 @@
 import Link from 'next/link'
-import { allPosts, Post } from 'contentlayer/generated'
+import { allPosts } from 'contentlayer/generated'
 
-export default async function Home({ params }: { params: { tag: string } }) {
+export default async function Home() {
   return (
     <div className="py-8 mx-auto max-w-xl">
       <h1 className="mb-8 text-3xl font-bold text-center">Next.js docs</h1>