how to set FQDN properly in /etc/hosts

I want to set my Fully Qualified Domain Name according to https://github.com/DigitalOcean-User-Projects/Articles-and-Tutorials/blob/master/set_hostname_fqdn_on_ubuntu_centos.md#setting-the-fully-qualified-domain-name-fqdn

I was confused by the statements : Modify your hosts file so that it resembles the following (obviously, substituting the hostname, yourdomain, tld, and YourIP values with your own):

127.0.0.1 localhost.localdomain localhost 127.0.1.1 hostname.yourdomain.tld hostname YourIP hostname.yourdomain.tld hostname

Now ,my hostname is test ,my domain is xx.yy , my vps ip is 123.45.67.89 , will i edit the /etc/hosts file into

127.0.0.1 localhost.localdomain localhost 127.0.1.1 test.xx.yy.tld test 123.45.67.89 test.xx.yy.tld test What does tld mean in the hostname.yourdomain.tld?Which value is it in my situation?