fix: render academy writer username

src/components/home/Academy.tsx

@@ -42,7 +42,7 @@ export default function Academy({ data }: { data: Blog[] }) {
                 <span className="px-3 py-1 text-xs text-orange-500 border rounded-full bg-orange-500/10 border-orange-500/20">{t("newBadge")}</span>
                 <span className="flex items-center gap-1 text-xs text-gray-500">
                   <User className="w-3 h-3" />
-                  {b.writer}
+                  {b.writer.username}
                 </span>
               </div>