delete whitespace

Author: leemthompo

docs/reference/release-notes/highlights.asciidoc

@@ -3,7 +3,6 @@
 
 Here are the highlights of what's new and improved in {es} {minor-version}!
 ifeval::["{release-state}"!="unreleased"]
-
 For detailed information about this release, see the <<es-release-notes>> and
 <<breaking-changes>>.