Auto merge of #10938 - ptdecker:add-author-example, r=weihanglo

This change adds an example to the authors attribute in the manifest.

It is submitted to clarify the documenation for new folks such as
myself. See the forum issue linked below which prompted this change
since the error message the compiler issues is not clear for new
folks.

https://users.rust-lang.org/t/compile-error-when-adding-authors-to-cargo-toml/79383

Thank you for considering this contribution. It's my first so go
easy on me please!  :-)

src/doc/src/reference/manifest.md

@@ -112,12 +112,18 @@ breaking change.
 <a id="the-authors-field-optional"></a>
 #### The `authors` field
 
-The optional `authors` field lists people or organizations that are considered
+The optional `authors` field lists in an array the people or organizations that are considered
 the "authors" of the package. The exact meaning is open to interpretation — it
 may list the original or primary authors, current maintainers, or owners of the
 package. An optional email address may be included within angled brackets at
 the end of each author entry.
 
+```toml
+[package]
+# ...
+authors = ["Graydon Hoare", "Fnu Lnu <no-reply@rust-lang.org>"]
+```
+
 This field is only surfaced in package metadata and in the `CARGO_PKG_AUTHORS`
 environment variable within `build.rs`. It is not displayed in the [crates.io]
 user interface.