Update app.py

fuck i keep double jsonifying

app.py

@@ -105,7 +105,8 @@ def get_vehicle_destinations(vehicle_numbers):
             vehicle_info[vid] = destination
 
     # Now vehicle_info is a dict mapping vehicle IDs to their info
-    return jsonify(vehicle_info)
+    return vehicle_info # cannot double jsonify!
+
 
 @app.route('/', methods=['GET'])
 def health_check():