Update docs/reference/esql.md

Co-authored-by: Marci W <[email protected]>

Author: picandocodigo

docs/reference/esql.md

@@ -128,4 +128,5 @@ query.to_s
 => "FROM sample | SORT @timestamp DESC | WHERE event_duration > 5000000 | LIMIT 3"
 ```
 
+The `elastic-esql` library works independently of the {{es}} client, so you can use it alongside any client — not just Ruby.
 For more information, see the gem [README](https://github.com/elastic/esql-ruby?tab=readme-ov-file#ruby-esql-query-builder).