Add dmissing release-notes, not only highlights. (#8423) (#8424)

Signed-off-by: Michael Montgomery <[email protected]>
(cherry picked from commit 4d6ff6a)

Author: naemono

docs/release-notes.asciidoc

@@ -6,6 +6,7 @@
 
 This section summarizes the changes in each release.
 
+* <<release-notes-2.16.1>>
 * <<release-notes-2.16.0>>
 * <<release-notes-2.15.0>>
 * <<release-notes-2.14.0>>
@@ -51,6 +52,7 @@ This section summarizes the changes in each release.
 
 --
 
+include::release-notes/2.16.1.asciidoc[]
 include::release-notes/2.16.0.asciidoc[]
 include::release-notes/2.15.0.asciidoc[]
 include::release-notes/2.14.0.asciidoc[]