add monitor_enrich (and don't add manage twice)

docs/reference/security/authorization/privileges.asciidoc

@@ -79,11 +79,6 @@ patterns. It also includes the authority to grant the privileges necessary to
 manage follower indices and auto-follow patterns. This privilege is necessary
 only on clusters that contain follower indices.
 
-`manage_enrich`::
-Grants access and use all of the {ref}/enrich-apis.html[enrich APIs].
-Users with this privilege can manage enrich policies that add data from your existing
-indices to incoming documents during ingest.
-
 `manage_ilm`::
 All {Ilm} operations related to managing policies.
 
@@ -191,6 +186,9 @@ security roles of the user who created or updated them.
 All cluster read-only operations, like cluster health and state, hot threads,
 node info, node and cluster stats, and pending cluster tasks.
 
+`monitor_enrich`::
+All read-only operations related to managing and executing enrich policies.
+
 `monitor_ml`::
 All read-only {ml} operations, such as getting information about {dfeeds}, jobs,
 model snapshots, or results.