Fix arrow function syntax in users map

Remove incorrect semicolon - users map uses implicit return
with arrow function (user) => ( ... ) not { return ... }

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

app/admin/users/page.tsx

@@ -333,8 +333,7 @@ export default function UsersPage() {
             )}
             </div>
           </div>
-          );
+        ))}
-        })}
       </div>
 
       {users.length === 0 && (