Resolve "front-matter linter"

Closes #320 (closed)

.gitlab-ci.yml

@@ -173,9 +173,8 @@ lint:
     - pip install df-wiki-cli --index-url https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.pasteur.fr/api/v4/projects/5222/packages/pypi/simple
     - cd content/3.defense-systems
   script:
-    - >
-      find . -name '*.md' -print0 | xargs -0 -I {} 
-      df-wiki-cli wiki lint --file {}
+    - find . -name '*.md' -print0 | xargs -0 -I {} df-wiki-cli wiki lint --file {}
+      
   rules: 
     - if: $CI_COMMIT_BRANCH != "main"