Update file structure section in README

README.md

@@ -108,12 +108,11 @@ The five prompt templates provide structured entry points for students who need
 
 - `app.py` — Main Streamlit app with Responses API integration
 - `config.py` — All app settings and customization (model selection, web search, prompt templates, system prompt)
-- `.streamlit/secrets.toml` — Authentication credentials and API key (not tracked in git)
 - `requirements.txt` — Python dependencies
 - `terms.csv` — Your course terms and definitions (CSV format: term, context)
 - `example_syllabus.pdf` — Example resource file (replace with your own syllabus)
 - `LICENSE` — GNU GPL-3 License file
-- `S2_user_manual_v3.pdf` — Comprehensive user manual with detailed setup and configuration instructions
+- `S2_user_manual.pdf` — Comprehensive user manual with detailed setup and configuration instructions
 
 ## License