Fix link formatting in known issues document

Author: swopebe

release_notes/known_issues_application.adoc

@@ -173,7 +173,7 @@ A subscription administrator needs to deploy the application subscription to cha
 
 See link:../applications/allow_deny.adoc[Creating an allow and deny list as subscription administrator] for information. `policy.open-cluster-management.io/v1` resources that were deployed by existing application subscriptions in previous {acm-short} versions remain, but are no longer reconciled with the source repository unless the application subscriptions are deployed by a subscription administrator.
 
-linkhttps://github.com/stolostron/backlog/issues/17819[ACM-17819]
+link:https://github.com/stolostron/backlog/issues/17819[ACM-17819]
 
 [#application-ansible-standalone]
 == Application Ansible hook stand-alone mode