Update app.py

app.py

@@ -26,10 +26,10 @@ with open(SAMPLE_JSON_PATH, 'r') as f:
 current_essay_index = None
 
 TEXT_CLASS_MAPPING = {
-    'llm': 'Machine Generated',
-    'human': 'Human Written',
-    'machine-humanized': 'Machine Written, Machine Humanized',
-    'machine-polished': 'Human Written, Machine Polished'
+    'LABEL_1': 'Machine Generated',
+    'LABEL_2': 'Human Written',
+    'LABEL_3': 'Machine Written, Machine Humanized',
+    'LABEL_4': 'Human Written, Machine Polished'
 }
 
 def process_result_detection_tab(text):