[DOCS] Add links to enrich APIs

Author: lcawl

docs/reference/ingest/apis/enrich/delete-enrich-policy.asciidoc

@@ -5,6 +5,12 @@
 <titleabbrev>Delete enrich policy</titleabbrev>
 ++++
 
+.New API Reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-enrich[enrich APIs].
+--
+
 Deletes an existing <<enrich-policy,enrich policy>> and its
 <<enrich-index,enrich index>>.
 

docs/reference/ingest/apis/enrich/execute-enrich-policy.asciidoc

@@ -5,6 +5,12 @@
 <titleabbrev>Execute enrich policy</titleabbrev>
 ++++
 
+.New API Reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-enrich[enrich APIs].
+--
+
 Executes an existing <<enrich-policy,enrich policy>>.
 
 ////

docs/reference/ingest/apis/enrich/get-enrich-policy.asciidoc

@@ -5,6 +5,12 @@
 <titleabbrev>Get enrich policy</titleabbrev>
 ++++
 
+.New API Reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-enrich[enrich APIs].
+--
+
 Returns information about an <<enrich-policy,enrich policy>>.
 
 ////

docs/reference/ingest/apis/enrich/index.asciidoc

@@ -2,6 +2,12 @@
 [[enrich-apis]]
 == Enrich APIs
 
+.New API Reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-enrich[enrich APIs].
+--
+
 The following enrich APIs are available for managing <<enrich-policy,enrich
 policies>>:
 

docs/reference/ingest/apis/enrich/put-enrich-policy.asciidoc

@@ -5,6 +5,11 @@
 <titleabbrev>Create enrich policy</titleabbrev>
 ++++
 
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-enrich[enrich APIs].
+--
+
 Creates an enrich policy.
 
 ////