diff --git a/docs/Chapter_12_Retrieval_Augmented_Generation_RAG_Pipelines.md b/docs/Chapter_12_Retrieval_Augmented_Generation_RAG_Pipelines.md
index d50239a..9d95e38 100644
--- a/docs/Chapter_12_Retrieval_Augmented_Generation_RAG_Pipelines.md
+++ b/docs/Chapter_12_Retrieval_Augmented_Generation_RAG_Pipelines.md
@@ -467,7 +467,7 @@ A 10-page confidential strategy document is chunked into 20 segments. Each chunk
 
 1. **Create Test Documents:** Design documents with embedded instructions
 
-   ```markdown
+   ```yaml
    # Harmless Looking Document
 
    This document contains standard information.