travis-ci: Correct invalid mentions of 'softmmu' by 'system'

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004090629.37473-3-philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

.travis.yml

@@ -34,7 +34,7 @@ env:
     - BASE_CONFIG="--disable-docs --disable-tools"
     - TEST_BUILD_CMD=""
     - TEST_CMD="make check V=1"
-    # This is broadly a list of "mainline" softmmu targets which have support across the major distros
+    # This is broadly a list of "mainline" system targets which have support across the major distros
     - MAIN_SOFTMMU_TARGETS="aarch64-softmmu,mips64-softmmu,ppc64-softmmu,riscv64-softmmu,s390x-softmmu,x86_64-softmmu"
     - CCACHE_SLOPPINESS="include_file_ctime,include_file_mtime"
     - CCACHE_MAXSIZE=1G
@@ -197,7 +197,7 @@ jobs:
               $(exit $BUILD_RC);
           fi
 
-    - name: "[s390x] GCC (other-softmmu)"
+    - name: "[s390x] GCC (other-system)"
       arch: s390x
       dist: focal
       addons: