main: fix empty string

main/services.py

@@ -49,7 +49,7 @@ class TimelineArticleDownloadService:
                     article_type=ARTICLE_TYPES.WORK_TIMELINE,
                     title=article["title"],
                     slug=article["slug"],
-                    perex=article["description"].replace(" ", ""),
+                    perex=article["description"].replace(" ", " "),
                     author="ČESKÁ PIRÁTSKÁ STRANA",
                     date=article["start_date"],
                     image=img_obj,