Update README.md

Nicer readme for llm-pdfs

advanced_tutorials/llm_pdfs/README.md

@@ -1,7 +1,7 @@
-# ⚙️ Build a private PDF search system using LLMs and RAG  
+# ⚙️ Private PDF search using LLMs and RAG  
   * [Helper video describing how to implement this LLM PDF system](https://www.youtube.com/watch?v=8YDANJ4Gbis) 
 
-# ⚙️ Index Private PDFs for RAG, create a fine-tuned LLM, UI for querying
+# ⚙️ RAG, Fine-tune a LLM, UI for querying
 
 This project is an AI system built on Hopsworks that
   * creates vector embeddings for PDF files in a google drive folder (you can also use local/network directories) and indexes them for retrieval augmented generation (RAG) in Hopsworks Feature Store with Vector Indexing