chore(CI/find_broken_links): include fragments in lychee run

addresses #2439

.gitlab-ci.yml

@@ -152,6 +152,7 @@ find_broken_links:
       lychee
       --cache
       --no-progress
+      --include-fragments
       --exclude-all-private
       --exclude 'demo\.funkwhale\.audio'
       --exclude 'nginx\.com'