[7.x] [DOCS] Add tip for Kibana Fleet APIs (#75711) (#75713)

* [DOCS] Add tip for Kibana Fleet APIs (#75711)

Adds a tip to direct external search users to the Kibana Fleet APIs.

Co-authored-by: James Rodewig <40268737+jrodewig@users.noreply.github.com>

* [DOCS] Relocate tip for Fleet APIs

Co-authored-by: Eric Davis <eric.davis@elastic.co>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

docs/reference/fleet/index.asciidoc

@@ -2,6 +2,9 @@
 [[fleet-apis]]
 == Fleet APIs
 
+TIP: For the {kib} {fleet} APIs, see the
+{fleet-guide}/fleet-api-docs.html[Fleet API Documentation].
+
 The following APIs support {fleet}'s use of {es} as a data store for internal
 agent and action data. These APIs are experimental and for internal use by
 {fleet} only.
@@ -10,4 +13,3 @@ agent and action data. These APIs are experimental and for internal use by
 
 // top-level
 include::get-global-checkpoints.asciidoc[]
-