changed some semantic

app.py

@@ -20,7 +20,7 @@ def read_dict_from_file(filename):
 text_output_path = 'output.txt'
 database, text_list = read_dict_from_file(text_output_path)
 text_list.append("Unidentified")
-database["Unidentified"] = "NA"
+database["N/A"] = "NA"
 image_paths = ['images/captured_image.jpg']
 
 device = "cuda:0" if torch.cuda.is_available() else "cpu"