add link to Spring AI reference docs.

Author: rpietzsch

docs/explore-and-author/companion/index.md

@@ -14,6 +14,7 @@ The Companion view enables you to interact with your data, graphs, vocabularies,
 !!! info "Configuration"
 
     See [`spring.ai.*` properties of Configuration of Servlet Container](../../deploy-and-configure/configuration/explore/dataplatform/application-full/#configuration-of-servlet-container) to learn how to enable and configure this feature.
+    Explore uses _Spring AI_ to connect and configure LLM provider, as such the [Spring AI Chat Model API Configuration Reference](https://docs.spring.io/spring-ai/reference/api/chatmodel.html) applies.
 
 The Companion need to be configured in order to be activated and used.
 Our deployment templates (helm charts and docker-compose configurations) provide testes configuration profiles for different LLM providers.