[gxml] CI: Fix script for on failure artifacts

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit be6c10def8532d6344770b4016babae37227f6bc
Author: Daniel Espinosa Ortiz <esodan gmail com>
Date:   Wed Feb 9 16:17:03 2022 +0000

    CI: Fix script for on failure artifacts

 .gitlab-ci.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5a1d8f4..022e4b9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,7 +27,8 @@ build:
   - cd _build
   - ninja
   - meson test
-  - ninja installartifacts:
+  - ninja install
+  artifacts:
     when: on_failure
     paths:
     - _build/meson-logs/testlog.txt