message: allow both python and python3 commands for OS compatibility
diff: "manualInstructions": [],
  "actionId": "CB387AC0-16D0-4E07-B41A-F1EA616A7CA9",
  "args": {
  - "dict": "{'start-backend': 'python server/server.py'}",
  + "dict": "{'start-backend': 'python3 server/server.py || python server/server.py'}",
  "key": "scripts",
  "jsonPath": "package.json"
  },
  