Update app.py

app.py

@@ -22,7 +22,7 @@ try:
 except Exception as e:
     print(f"Failed to load models: {e}")
 
-def load_and_preprocess_text(filenam):
+def load_and_preprocess_text(filename):
     """
     Load and preprocess text from a file, removing empty lines and stripping whitespace.
     """