highlight elasticsearch supported version range (#2582)

* highlight elasticsearch supported version range Close #2581 * Update 2.deploy-es.md --------- Co-authored-by: abby.huang <[email protected]>
vesoft-inc · Jul 19, 2024 · 81799dd · 81799dd
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diff --git a/docs-2.0-en/4.deployment-and-installation/6.deploy-text-based-index/2.deploy-es.md b/docs-2.0-en/4.deployment-and-installation/6.deploy-text-based-index/2.deploy-es.md
@@ -12,7 +12,8 @@ To deploy an Elasticsearch cluster, see [Kubernetes Elasticsearch deployment](ht
 
 !!! note
 
-    To support external network access to Elasticsearch, set `network.host` to `0.0.0.0` in `config/elasticsearch.yml`.
+    - To support external network access to Elasticsearch, set `network.host` to `0.0.0.0` in `config/elasticsearch.yml`.
+    - Only Elasticsearch version 7.x is supported.
 
 You can configure the Elasticsearch to meet your business needs. To customize the Elasticsearch, see [Elasticsearch Document](https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html).