[DOCS] Add missing privilege to bulk prerequisites (#92237) (#92300)

Author: abdonpijpelink

docs/reference/docs/bulk.asciidoc

@@ -49,6 +49,9 @@ privilege.
 ** To automatically create a data stream or index with a bulk API request, you
 must have the `auto_configure`, `create_index`, or `manage` index privilege.
 
+** To make the result of a bulk operation visible to search using the `refresh`
+parameter, you must have the `maintenance` or `manage` index privilege.
+
 * Automatic data stream creation requires a matching index template with data
 stream enabled. See <<set-up-a-data-stream>>.