Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -13,7 +13,7 @@ test-job1:
   script:
     - ls -a
     - pwd
-    - tidy -o output.html -f greske.txt --doctype omit --clean yes --tidy-mark no index.html
+    - tidy -o output.html -f greske.txt --drop-empty-elements no --doctype omit --clean yes --tidy-mark no index.html
   artifacts:
     when: always
     paths: