message: docs(contributing): PR -> MR.
diff: @@ -34,7 +34,7 @@ integration tests.
  ## Test your code
  -Before submitting a PR, ensure that you've run your tests locally and that they
  +Before submitting a merge request (MR) on GitLab, ensure that you've run your tests locally and that they
  pass. This can be done by running the following two commands:
  ```sh
  @@ -43,7 +43,7 @@ cargo +nightly test --lib && bash examples/run_examples.sh
  ## Format your code
  -In addition, format your code before submitting a PR. This will require that
  +In addition, format your code before submitting a MR. This will require that
  you've installed the `rustfmt` Cargo component.
  ```sh
  