Fix link to Enterprise Search release notes (#2513)

Author: chriscressman

docs/en/install-upgrade/breaking.asciidoc

@@ -9,7 +9,7 @@ use and make the necessary changes so your code is compatible with {version}.
 ** {beats-ref}/breaking-changes.html[{beats} breaking changes]
 ** {ref}/breaking-changes.html[{es} migration guide]
 ** {security-guide}/release-notes.html[{elastic-sec} release notes]
-** {enterprise-search-ref}/release-notes-{version}.html[{ents} release notes]
+** {enterprise-search-ref}/changelog.html[{ents} release notes]
 ** {fleet-guide}/release-notes.html[{fleet} and {agent} release notes]
 ** {kibana-ref}/release-notes.html[{kib} release notes]
 ** {logstash-ref}/breaking-changes.html[{ls} breaking changes]