Update app.py

app.py

@@ -22,7 +22,7 @@ from functools import lru_cache
 import hashlib
 import markdown2
 from concurrent.futures import ThreadPoolExecutor
-from hdb_scan import HDBSCAN
+from hdbscan import HDBSCAN
 import websockets
 from websockets.exceptions import ConnectionClosed
 from code_editor import code_editor, generate_code_snippet