Merge branch 'fix-elasticsearch-docs' into 'master'

Fix GitLab version for elasticsearch

See merge request gitlab-org/gitlab-ee!8049

doc/integration/elasticsearch.md

@@ -16,8 +16,8 @@ special searches:
 | GitLab version | Elasticsearch version |
 | -------------- | --------------------- |
 | GitLab Enterprise Edition 8.4 - 8.17  | Elasticsearch 2.4 with [Delete By Query Plugin](https://www.elastic.co/guide/en/elasticsearch/plugins/2.4/plugins-delete-by-query.html) installed |
-| GitLab Enterprise Edition 9.0+        | Elasticsearch 5.1 - 5.5 |
-| GitLab Enterprise Edition 11.4+        | Elasticsearch 5.6 - 6.x |
+| GitLab Enterprise Edition 9.0 - 11.4   | Elasticsearch 5.1 - 5.5 |
+| GitLab Enterprise Edition 11.5+        | Elasticsearch 5.6 - 6.x |
 
 ## Installing Elasticsearch