[8.x] Fix API docs link (backport #1415)

docs/en/ingest-management/fleet/fleet-api-docs.asciidoc

@@ -1,23 +1,8 @@
 [[fleet-api-docs]]
 = {kib} {fleet} APIs
 
-You can find details for all available {fleet} API endpoints in our generated
-<<fleet-apis,{fleet} API docs>>. This documentation is experimental and may be
-incomplete or change later.
-
-The main source of truth for the {fleet} API can be found in the
-https://github.com/elastic/kibana/blob/main/x-pack/plugins/fleet/common/openapi/bundled.json[self-contained spec file]
-that you can use to generate docs using Swagger or a similar tool.
-For more information, refer to the
-https://github.com/elastic/kibana/tree/main/x-pack/plugins/fleet/common/openapi/README.md[{fleet} OpenAPI readme].
-
-//However we do provide a self-contained spec file that you can
-//https://petstore.swagger.io/?url=https://raw.githubusercontent.com/elastic/kibana/{branch}/x-pack/plugins/fleet/common/openapi/bundled.json[view in Swagger]
-//(or a similar tool) to explore our Fleet APIs.
-
-//For more information, refer to the
-//https://github.com/elastic/kibana/blob/{branch}/x-pack/plugins/fleet/common/openapi/README.md[{fleet} OpenAPI file]
-//in the {kib} repository.
+You can find details for all available {fleet} API endpoints in our generated 
+{api-kibana}[Kibana API docs].
 
 In this section, we provide examples of some commonly used {fleet} APIs.