fix: correct indentation in homepage prizes section

Fix missing indentation that was causing a 500 error on the homepage. The grid div wrapper was incorrectly indented.

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Co-Authored-By: Claude <noreply@anthropic.com>

app/page.tsx

@@ -152,6 +152,7 @@ export default function HomePage() {
             </Card>
             </div>
           </div>
+        </div>
       </section>
 
       {/* CTA Section */}