Update shared version attributes

Author: lcawl

shared/versions/stack/8.15.asciidoc

@@ -28,7 +28,7 @@ release-state can be: released | prerelease | unreleased
 //////////
 is-current-version can be: true | false
 //////////
-:is-current-version:    true
+:is-current-version:    false
 
 //////////
 hide-xpack-tags defaults to "false" (they are shown unless set to "true")

shared/versions/stack/8.16.asciidoc

@@ -24,12 +24,12 @@ Keep the :esf_version: attribute value as master.
 //////////
 release-state can be: released | prerelease | unreleased
 //////////
-:release-state:          unreleased
+:release-state:          released
 
 //////////
 is-current-version can be: true | false
 //////////
-:is-current-version:    false
+:is-current-version:    true
 
 //////////
 hide-xpack-tags defaults to "false" (they are shown unless set to "true")

shared/versions/stack/current.asciidoc

@@ -1 +1 @@
-include::8.15.asciidoc[]
+include::8.16.asciidoc[]