fix feed URLs

main/feeds.py

@@ -59,7 +59,7 @@ class LatestArticlesFeed(Feed):
         return item.get_tags
 
     def item_link(self, item: MainArticlePage) -> str:
-        return item.get_full_url
+        return item.get_full_url()
 
     def item_enclosure_url(self, item: MainArticlePage) -> typing.Union[None, str]:
         if item.image is None: