change the josn file form data to chunk

app.py

@@ -221,7 +221,7 @@ async def generate_questions():
             generation_status["error"] = None
         
         # Load all JSON files from data folder
-        json_files = glob.glob("./data/*.json")
+        json_files = glob.glob("./chunk/*.json")
         
         if not json_files:
             raise HTTPException(status_code=404, detail="No JSON files found in data folder")