fix: only 3 posts in the index page

Author: KindaSloth

pages/index.tsx

@@ -38,7 +38,7 @@ export const getStaticProps: GetStaticProps = async () => {
   const mdxFiles = getAllMdx().map((post) => post["frontMatter"]);
   return {
     props: {
-      posts: mdxFiles.slice(0, 5),
+      posts: mdxFiles.slice(0, 3),
     },
   };
 };