Update generate from pdf path

app.py

@@ -254,8 +254,7 @@ async def generate_endpoint(
     for difficulty, n_questions in difficulty_counts.items():
         try:
             mcqs = rag.generate_from_pdf(
-                tmp_path,
-                collection=collection_name,
+                pdf_path=tmp_path,
                 n_questions=n_questions,
                 mode=mode,
                 questions_per_page=questions_per_page,