RAG documentation doesn't mention spring-ai-rag dependency

[torakiki]

The current version of the RAG documentation https://github.com/spring-projects/spring-ai/blob/main/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/retrieval-augmented-generation.adoc states:

To use the QuestionAnswerAdvisor or RetrievalAugmentationAdvisor, you need to add the spring-ai-advisors-vector-store dependency to your project:

 <dependency>
    <groupId>org.springframework.ai</groupId>
    <artifactId>spring-ai-advisors-vector-store</artifactId>
</dependency>

But RetrievalAugmentationAdvisor is part of spring-ai-rag and nowhere in the page this dependency is mentioned.
The documentation should be modified to reflect this commit 79671d4

[sunyuhan1998]

Indeed, thanks for the report, I tried to push a PR: #3375 to refine the description in the documentation.

[ilayaperumalg]

@torakiki Thanks for the report. As @sunyuhan1998 mentioned, this issue has been addressed via #3375 which is already merged as well.