Update .gitlab-ci.yml

.gitlab-ci.yml

 build:
     stage: build
     script:
+      - echo "trigger lido-publication to automatically create html and pdf documentation"
       - "curl -X POST -F token=ecc80d9da938856939bad8a8366765 -F ref=develop https://gitlab.gwdg.de/api/v4/projects/9849/trigger/pipeline"