Update app.py

app.py

@@ -34,7 +34,7 @@ def get_comp(prompt):
     return left_output, right_output
 
 def get_article(db_name="miread_contrastive"):
-    db = vecdbs[index_names.index(db_name)]
+    db = vecdbs[INDEXES.index(db_name)]
     return db[0]