- previously Name Server line began with "NS"
- now they begin with "Name Server"
- fixed typo
fixes:
```
1) sslip.io should have at least 2 nameservers
Failure/Error: expect(whois_nameservers.size).to be > 1
expected: > 1
got: 0
# ./sslip.io/spec/check-dns_spec.rb:37:in `block (2 levels) in <top (required)>'
```
Admittedly it's overkill to use RSpec to run a set of assertions against
a DNS server -- a simple shell script would have been shorter and more
understandable. We are using RSpec merely to practice using RSpec.
Also, RSpec is not quite appropriate because we're not testing a Ruby
class. In fact, we're not test Ruby code at all. So we should not be
using RSpec. Just sayin'.
