Update docs related to coreapi to include deprecation notice

docs/coreapi/7-schemas-and-client-libraries.md

@@ -1,5 +1,16 @@
 # Tutorial 7: Schemas & client libraries
 
+----
+
+**DEPRECATION NOTICE:** Use of CoreAPI-based schemas were deprecated with the introduction of native OpenAPI-based schema generation as of Django REST Framework v3.10. See the [Version 3.10 Release Announcement](../community/3.10-announcement.md) for more details.
+
+If you are looking for information regarding schemas, you might want to look at these updated resources:
+
+1. [Schema](../api-guide/schemas.md)
+2. [Documenting your API](../topics/documenting-your-api.md)
+
+----
+
 A schema is a machine-readable document that describes the available API
 endpoints, their URLS, and what operations they support.
 

docs/coreapi/from-documenting-your-api.md

@@ -1,6 +1,17 @@
 
 ## Built-in API documentation
 
+----
+
+**DEPRECATION NOTICE:** Use of CoreAPI-based schemas were deprecated with the introduction of native OpenAPI-based schema generation as of Django REST Framework v3.10. See the [Version 3.10 Release Announcement](../community/3.10-announcement.md) for more details.
+
+If you are looking for information regarding schemas, you might want to look at these updated resources:
+
+1. [Schema](../api-guide/schemas.md)
+2. [Documenting your API](../topics/documenting-your-api.md)
+
+----
+
 The built-in API documentation includes:
 
 * Documentation of API endpoints.

docs/coreapi/index.md

@@ -1,8 +1,8 @@
 # Legacy CoreAPI Schemas Docs
 
-Use of CoreAPI-based schemas were deprecated with the introduction of native OpenAPI-based schema generation in Django REST Framework v3.10.
+Use of CoreAPI-based schemas were deprecated with the introduction of native OpenAPI-based schema generation as of Django REST Framework v3.10.
 
-See the [Version 3.10 Release Announcement](/community/3.10-announcement.md) for more details.
+See the [Version 3.10 Release Announcement](../community/3.10-announcement.md) for more details.
 
 ----
 

docs/coreapi/schemas.md

@@ -2,6 +2,14 @@ source: schemas.py
 
 # Schemas
 
+----
+
+**DEPRECATION NOTICE:** Use of CoreAPI-based schemas were deprecated with the introduction of native OpenAPI-based schema generation as of Django REST Framework v3.10. See the [Version 3.10 Release Announcement](../community/3.10-announcement.md) for more details.
+
+You are probably looking for [this page](../api-guide/schemas.md) if you want latest information regarding schemas.
+
+----
+
 > A machine-readable [schema] describes what resources are available via the API, what their URLs are, how they are represented and what operations they support.
 >
 > — Heroku, [JSON Schema for the Heroku Platform API][cite]