ui: change "Latest Posts" to "Latest"

app/page.tsx

@@ -9,13 +9,10 @@ export default async function HomePage() {
     <Template>
     <main className="max-w-4xl mx-auto px-6 py-12">
       <header className="mb-16 text-center">
-        <p className="text-ink-soft text-lg">
-          A sleek static blog with code and math.
-        </p>
       </header>
       <section>
         <h1 className="heading-xl text-ink mb-8">
-          Latest Posts
+          Latest
         </h1>
         <PostList posts={posts} />
       </section>