#880 Fix RAG + TOOLS broken link (#889)

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## Checklist
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- [ ] I have added unit and integration tests for my change
- [ ] All unit and integration tests in the module I have added/changed
are green
- [ ] All unit and integration tests in the
[core](https://github.com/langchain4j/langchain4j/tree/main/langchain4j-core)
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[main](https://github.com/langchain4j/langchain4j/tree/main/langchain4j)
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- [ ] I have added/updated the
[documentation](https://github.com/langchain4j/langchain4j/tree/main/docs/docs)
- [ ] I have added an example in the [examples
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"big" features)
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[BOM](https://github.com/langchain4j/langchain4j/blob/main/langchain4j-bom/pom.xml)
(only when a new module is added)

## Checklist for adding new embedding store integration
- [ ] I have added a {NameOfIntegration}EmbeddingStoreIT that extends
from either EmbeddingStoreIT or EmbeddingStoreWithFilteringIT

Co-authored-by: Remy Ohajinwa <remyohajinwa@Remys-MacBook-Pro.local>

docs/docs/tutorials/7-rag.md

@@ -309,6 +309,6 @@ In the meantime, please read [this](https://github.com/langchain4j/langchain4j/p
 - [Advanced RAG with Query Routing](https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_02_Advanced_RAG_with_Query_Routing_Example.java)
 - [Advanced RAG with Re-Ranking](https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_03_Advanced_RAG_with_ReRanking_Example.java)
 - [Advanced RAG with Including Metadata](https://github.com/langchain4j/langchain4j-examples/blob/main/rag-examples/src/main/java/_3_advanced/_04_Advanced_RAG_with_Metadata_Example.java)
-- [RAG + Tools](https://github.com/langchain4j/langchain4j-examples/blob/main/spring-boot-example/src/test/java/dev/example/CustomerSupportApplicationTest.java)
+- [RAG + Tools](https://github.com/langchain4j/langchain4j-examples/blob/main/customer-support-agent-example/src/test/java/dev/langchain4j/example/CustomerSupportAgentApplicationTest.java)
 - [Loading Documents](https://github.com/langchain4j/langchain4j-examples/blob/main/other-examples/src/main/java/DocumentLoaderExamples.java)
 - [ConversationalRetrievalChain](https://github.com/langchain4j/langchain4j-examples/blob/main/other-examples/src/main/java/ChatWithDocumentsExamples.java)