message: update contributing doc
diff: @@ -12,7 +12,7 @@ This project and everyone participating in it is governed by a [Code of Conduct]
  ## **Did you write a patch that fixes a bug?**
  * Great!
  * If possible, add a unit test case to make sure the issue does not occur again.
  -* Make sure you run the code formatter (`make format`).
  +* Make sure you run the code formatter (`make format-fix`).
  * Open a new GitHub pull request with the patch.
  * Ensure the PR description clearly describes the problem and solution. Include the relevant issue number if applicable.
  