message: Remove broken link in contrib docs.
  I don't think this point is particularly important, so I'm just removing it.
diff: @@ -83,7 +83,6 @@ Some guidelines on working on a change:
  * All code changes are expected to comply with the formatting suggested by
  `rustfmt`. You can use `rustup component add rustfmt` to install `rustfmt`
  and use `cargo fmt` to automatically format your code.
  -* [Commit as you go][githelp].
  * Include tests that cover all non-trivial code. See the [Testing chapter] for
  more about writing and running tests.
  * All code should be warning-free. This is checked during tests.
  @@ -136,7 +135,6 @@ more information on how Cargo releases are made.
  [git]: https://git-scm.com/
  [GitHub]: https://github.com/
  [how-to-clone]: https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository
  -[githelp]: https://dont-be-afraid-to-commit.readthedocs.io/en/latest/git/commandlinegit.html
  [Testing chapter]: ../tests/index.md
  [GitHub's keywords]: https://docs.github.com/en/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue
  [rust-highfive]: https://github.com/rust-highfive
  