message: Fix some minor formatting issues.
diff: -/// Tests for future-incompat-report messages
  +//! Tests for future-incompat-report messages
  +
  use cargo_test_support::registry::Package;
  use cargo_test_support::{basic_manifest, is_nightly, project};
  @@ -139,7 +140,7 @@ fn test_multi_crate() {
  .unwrap();
  // Extract the 'id' from the stdout. We are looking
  - // for the id in a line of the form "run `cargo describe-future-incompatibilities --id 721d0666-81b6-4765-84fc-fd2832328324`"
  + // for the id in a line of the form "run `cargo describe-future-incompatibilities --id yZ7S`"
  // which is generated by Cargo to tell the user what command to run
  // This is just to test that passing the id suppresses the warning mesasge. Any users needing
  // access to the report from a shell script should use the `--future-incompat-report` flag
  