Update .gitlab-ci.yml file adapt path of topic-template

.gitlab-ci.yml

@@ -24,7 +24,7 @@ pandoc:
     entrypoint: ["/bin/sh", "-c"]
   script:
     # build research topics
-    - pandoc --standalone topics/topic-template.md -o build/topic-template.html  --mathjax
+    - pandoc --standalone build/topic-template.md -o build/topic-template.html  --mathjax
     # build index
     - pandoc --standalone build/index.md -o build/index.html --mathjax
     # build static staff pages (generated by create-staff-yml.sh