Add .pk WHOIS server whois.pknic.net.pk

[ashar9]

Reference IANA ccTLD Database: https://www.iana.org/domains/root/db/pk.html

Add whois server for .pk in file tld_serv_list (instead of WEB URL):

.pk whois.pknic.net.pk

Can be seen at: https://github.com/ashar9/rfc1036-whois/blob/next/tld_serv_list