systemc: Fix a typo in one of the error messages.

systemc: Fix a typo in one of the error messages.

This typo was added purposefully to match Accellera's output, but then
it was discovered that some test's golden output had the typo, and some
didn't. That must mean that not all tests have up to date output, and
that Accellera couldn't possibly pass all of their own tests.

To resolve this conflict, this change fixes the typo and manually
updates all the golden output.

Change-Id: I3d80f74ff21e844609e7bde5dfcd99fc56c085b0
Reviewed-on: https://gem5-review.googlesource.com/c/13204
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>