The `GANDI` provider also seems to be unable to see new domains (the
ones bought through the new interface), but I didn't mention that as
it may be a bug that could be solves at some point.
- Fixed indentation
- Use same naming scheme for all examples
(i.e. all caps for provider, REG prefix for registrar)
- Use REG_NONE as registrar when provider does not provide it
- Use example.tld for example domain
- Use 1.2.3.1/24 IP range for examples
- A few spelling fixes
* Clarify what "apiuser" is in Cloudflare docs
Confusingly it is the email address associated with the account, not the username.
* Remove Gandi registrar from docs
Because it doesn't actually exist.
