Fix command syntax for running tests in CI

Author: tintou

.github/workflows/test.yml

@@ -37,5 +37,6 @@ jobs:
       - name: Run tests
         run: |
           export XDG_RUNTIME_DIR="$(mktemp --tmpdir -d xdg-runtime-XXXXXX)"
-          weston --backend=headless --socket=wayland-1 --idle-time=0 & dbus-run-session --env WAYLAND_DISPLAY=wayland-1 meson test --suite monitor-gui-headless "*:" --print-errorlogs
-          # non-headless gui example: meson test -C build --suite monitor "*:" --print-errorlogs
+          weston --backend=headless --socket=wayland-1 --idle-time=0 &
+          dbus-run-session -- env WAYLAND_DISPLAY=wayland-1 meson test --suite monitor-gui-headless "*:" --print-errorlogs
+          # non-headless gui example: meson test -C build --suite monitor "*:" --print-errorlogs