tests: Print auditlog in plain text format.
tests: Print auditlog in plain text format.

* tests/gpgsm/t-verify.c (show_auditlog): Use plain text format.
--

The HTML output is not very helpful on the console and a pain to the
eyes.

gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme