message: fix: remove extra comma
diff: {
  "name": "buffer-test",
  "access": "public",
  - "args": [
  - { "name": "arg1", "type": { "buffer": { "length": 6 } } }
  - ],
  + "args": [{ "name": "arg1", "type": { "buffer": { "length": 6 } } }]
  },
  {
  "name": "trait-test",
  