Fix missing value in Zone11 message tag

[tgreenx]

Purpose

This PR fixes a missing value for message tag Z11_NO_SPF_NON_MAIL_DOMAIN in Zone11 test case.

How to test this PR

Tests should still pass.

Manual testing:

• Before this PR:

$ zonemaster-cli --show-testcase --level INFO --test zone11 --no-ipv6 fr

Seconds Level    Testcase       Message
======= ======== ============== =======
   0.00 INFO     Unspecified    Using version v8.1.0 of the Zonemaster engine.
   9.72 INFO     Zone11         No SPF policy was found for {domain}, which is a type of domain (root, TLD or under .ARPA) not expected to be used for email.

• After:

$ zonemaster-cli --show-testcase --level INFO --test zone11 --no-ipv6 fr

Seconds Level    Testcase       Message
======= ======== ============== =======
   0.00 INFO     Unspecified    Using version v8.1.0 of the Zonemaster engine.
   9.70 INFO     Zone11         No SPF policy was found for fr, which is a type of domain (root, TLD or under .ARPA) not expected to be used for email.

[tgreenx]

(Candidate for v2025.2.1)

[matsduf]

Do we really have to say what domain it is when it is the tested domain?

[marc-vanderwal]

Maybe not, but I don’t see how to word the message differently.

[matsduf]

Maybe not, but I don’t see how to word the message differently.

I do not suggest any change now, but e.g.

No SPF policy was found for the tested domain, which is a type of domain (...)

The base branch was changed.