message: Update src/doc/src/reference/manifest.md
diff: @@ -135,7 +135,7 @@ with the latest stable edition. By default `cargo new` creates a manifest with
  the 2018 edition currently.
  If the `edition` field is not present in `Cargo.toml`, then the 2015 edition is
  -assumed for backwards compatibility with Rust 1.0. Note that all manifests
  +assumed for backwards compatibility. Note that all manifests
  created with [`cargo new`] will not use this historical fallback because they
  will have `edition` explicitly specified to a newer value.
  