docs: add information about main(int, char **)

Add information about main(int, argc **) in places where the documentation
stated that only parameterless main could be used

Signed-off-by: Jakub Michalski <jmichalski@internships.antmicro.com>
Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>
2 files changed