docs(print): moving the actual documentation on the header

- The documentation on the header allow u to see on the files where the
header is inclued

print/ft_putchar_fd.c

@@ -6,18 +6,12 @@
 /*   By: rparodi <marvin@42.fr>                     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/09 13:58:22 by rparodi           #+#    #+#             */
-/*   Updated: 2025/09/01 17:46:44 by rparodi          ###   ########.fr       */
+/*   Updated: 2025/09/05 16:23:43 by rparodi          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include <unistd.h>
 
-/**
- * @brief print an character on a file descriptor
- *
- * @param c the character to print
- * @param fd the file descriptor
- */
 void	ft_putchar_fd(char c, int fd)
 {
 	write(fd, &c, 1);