style(test/char): adding the last '\n'

- For the last return line

test/char/test_isalnum.c

@@ -6,7 +6,7 @@
 /*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/09/04 16:54:42 by rparodi           #+#    #+#             */
-/*   Updated: 2025/09/04 18:50:17 by rparodi          ###   ########.fr       */
+/*   Updated: 2025/09/05 11:24:26 by rparodi          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,4 +33,5 @@ int	main(void)
 			printf("%s✔%s ", CLR_GREEN, RESET);
 		c++;
 	}
+	puts("\n");
 }