Fix issue with latex_documents

Reviewed-by: tischrei <tino.schreiber@t-systems.com>
Co-authored-by: Sebastian Gode <sebastian.gode@telekom.de>
Co-committed-by: Sebastian Gode <sebastian.gode@telekom.de>

tools/generate_doc_confpy.py

@@ -276,6 +276,7 @@ def process_repositories(args, service):
             context["docs"].append(doc)
 
         context["target_environment"] = args.target_environment
+        context["service_type"] = service['service_type']
 
         tox_ini_content = tox_ini_template.render(**context)
         tox_ini_path = pathlib.Path(copy_to, "tox.ini")