Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -23,6 +23,7 @@ pages:
   before_script:
     - pip install mkdocs-material mkdocs-glightbox
   script:
+    - git clone https://gitlab-ci-token:${CI_JOB_TOKEN}@git.rwth-aachen.de/unicado/libraries.git
     - mkdir $CI_PROJECT_DIR/docs/aircraft-xml
     - python $CI_PROJECT_DIR/scripts/document_aircraft_xml.py --title General --level 1 $CI_PROJECT_DIR/scripts/CSR-02.xml > $CI_PROJECT_DIR/docs/aircraft-xml/general.md
     - python $CI_PROJECT_DIR/scripts/document_aircraft_xml.py --title MassesAndLoadings --level 3 $CI_PROJECT_DIR/scripts/CSR-02.xml > $CI_PROJECT_DIR/docs/aircraft-xml/masses.md