The docs is currently reporting http://localhost:8080/swagger-ui as the URL to access Swagger UI for Kogito based applications.

However, this was not correct.
First, for Kogito-on-SpringBoot this was never valid, since SB does not provide the Swagger UI ootb, and the examples to my knowledge never provided a bundled Swagger UI.
For Quarkus, this changed since v1.11 (see here) and now the standard, ootb URL, is http://localhost:8080/q/swagger-ui

The proposed Docs change uses a couple of examples for URLs, and make explicit it depends on the configuration.
The examples URLs are working following the recent code changes to archetypes and kogito-examples