fix: nil: Fix version description in a startup log message

Commit 5cd6c173ff74309ae7fb73b3e4c754f1589eaddc changed the contents of
the PACKAGE_DESCRIPTION preprocessor macro from " (<description>)" to
just "<description>" and missed a spot while adjusting all uses of this
macro in the code base.  Fix formatting for that malformed log message,
emitted upon named startup.

See #5379

Merge branch '5379-fix-version-description-in-a-startup-log-message' into 'main'

See merge request isc-projects/bind9!10646