Revert index file

Author: kilfoyle

docs/en/ingest-management/index.asciidoc

@@ -237,7 +237,7 @@ include::troubleshooting/troubleshooting.asciidoc[leveloffset=+2]
 
 include::troubleshooting/faq.asciidoc[leveloffset=+2]
 
-include::release-notes/release-notes-8.16.asciidoc[leveloffset=+1]
+include::release-notes/release-notes-8.17.asciidoc[leveloffset=+1]
 
 include::elastic-agent/install-fleet-managed-agent.asciidoc[leveloffset=+2]