Update API document at docs.airbyte.com/api-documentation (#20449)

* Update API document on docs.airbyte.com

Updates to document located at https://docs.airbyte.com/api-documentation

* Update api-documentation.md

* Update api-documentation.md

* Update api-documentation.md

docs/api-documentation.md

@@ -3,13 +3,17 @@
 :::caution
 
 For Airbyte Open-Source you don't need the API Token for Authentication!
-All endpoints are possible to access using the API without it. **Note**: Airbyte Cloud does not currently support API access. 
+All endpoints are possible to access using the API without it.
 
 :::
 
 Our Configuration API is still in alpha and might change. You won’t lose any functionality, but you may need to update your code to catch up to any backwards incompatible changes in the API.
 
-**Check it out** [**here**](https://airbyte-public-api-docs.s3.us-east-2.amazonaws.com/rapidoc-api-docs.html)**.** It is still rudimentary, and we will improve in the next couple of weeks.
+**Check it out** [**here**](https://airbyte-public-api-docs.s3.us-east-2.amazonaws.com/rapidoc-api-docs.html)**.**
 
 Don't hesitate to ask us on [Slack](https://slack.airbyte.io), if you have any questions about it.
 
+:::info
+
+Airbyte Cloud will also support API access in 2023. See [Airbyte roadmap](https://app.harvestr.io/roadmap/view/pQU6gdCyc/airbyte-roadmap) for more details.
+