style: format code with prettier

src/app/admin/layout.tsx

@@ -188,7 +188,9 @@ async function Sidebar({ staff }: { staff: { id: number; username: string; rank:
           {initial}
         </span>
         <div className="min-w-0 flex-1">
-          <div className="font-semibold text-sm text-[var(--admin-sidebar-text-readable)] truncate">{staff.username}</div>
+          <div className="font-semibold text-sm text-[var(--admin-sidebar-text-readable)] truncate">
+            {staff.username}
+          </div>
           <span className="inline-block mt-0.5 text-[0.6rem] font-bold uppercase tracking-widest text-[var(--admin-sidebar-muted-readable)]">
             {t("rankLabel", { rank: staff.rank })}
           </span>