message: Fix example for usage still not published uuid 2.0.0
diff: @@ -376,7 +376,7 @@ my-library = { git = 'https://example.com/git/my-library' }
  uuid = "1.0"
  [patch.crates-io]
  -uuid = { git = 'https://github.com/rust-lang-nursery/uuid', version = '2.0.0' }
  +uuid = { git = 'https://github.com/rust-lang-nursery/uuid', branch = '2.0.0' }
  ```
  Note that this will actually resolve to two versions of the `uuid` crate. The
  