M7 Upgrade Challenges

[jamesward]

I just upgraded from M6 to M7 and ran into a few challenges.

1. It wasn't clear in the docs that I need to add the spring-ai-advisors-vector-store dependency to get the QuestionAnswerAdvisor even though I have spring-ai-starter-vector-store-pgvector
2. The Bedrock docs were unclear about how to enable one of the two embedding models. That page references unused properties like spring.ai.bedrock.cohere.embedding.enabled=true when instead I needed to set spring.ai.model.embedding=bedrock-cohere but that was complicated by IntelliJ not recognizing that property.

[tzolov]

Resolved by #2697

[tzolov]

Thanks for the valuable feedback @jamesward