Refine documentation: update section headings for consistency across RAG setup, pipeline, and memory observation guides

Author: madeline-underwood

content/learning-paths/laptops-and-desktops/dgx_spark_rag/2b_rag_setup.md

@@ -21,7 +21,7 @@ Key advantages of FAISS for this application:
 - Speed: Uses advanced indexing algorithms to perform nearest-neighbor searches in milliseconds
 - Flexibility: Supports multiple distance metrics (L2, cosine similarity) and index types
 
-## Set up youe RAG workspace and data folder
+## Set up your RAG workspace and data folder
 
 Create a directory structure for your data: