I believe this paragraph has the information switched. A string in the `domain` column that contains a **dot** would represent a domain/hostname and a string in this column without a dot, would represent a subdomain. The current documentation has this flipped.
It had me second guessing myself. Unless I am misunderstanding something.
Maybe I am misunderstanding things, and if so, then disregard this PR.
* Fix Typo
The statement "Records that contain dots in the domain column will be treated as domains (hostnames) and records that don't contain any dots will be treated as subdomains" should be the other way round
* Move (hostnames) after domains