[DOCS] Use versions file from elastic/docs (#46719)

docs/Versions.asciidoc

@@ -1,24 +1,13 @@
-:version:               8.0.0
-////
-bare_version never includes -alpha or -beta
-////
-:bare_version:          8.0.0
-:major-version:         8.x
-:prev-major-version:    7.x
+
+include::{asciidoc-dir}/../../shared/versions/stack/{source_branch}.asciidoc[]
+
 :lucene_version:        8.2.0
 :lucene_version_path:   8_2_0
-:branch:                master
 :jdk:                   11.0.2
 :jdk_major:             11
 :build_flavor:          default
 :build_type:            tar
 
-//////////
-release-state can be: released | prerelease | unreleased
-//////////
-
-:release-state:   unreleased
-
 :issue:           https://github.com/elastic/elasticsearch/issues/
 :ml-issue:        https://github.com/elastic/ml-cpp/issues/
 :pull:            https://github.com/elastic/elasticsearch/pull/