Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -6,6 +6,7 @@ latex:
   image: texlive/texlive:latest
   stage: build
   script:
+    # Install inkscape for LaTeX svg package
     - apt-get update -qq && apt-get install --no-install-recommends -y inkscape
     - apt-get autoclean autoremove && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
     - latexmk -cd -pdf -shell-escape document/thesis.tex