Fix example used in cargo_common_metadata

[Urcra]

The previous example used in cargo_common_metadata included an authors field, even though the comment says it doesn't. And thus doesn't actually demonstrate an example of how the lint fails.

This removes that authors field from the bad example and suggest to fix the bad example by adding the authors field

changelog: Fix example used in cargo_common_metadata

[rust-highfive]

r? @flip1995

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[flip1995]

Thanks!

@bors r+

[bors]

📌 Commit a4acb31 has been approved by flip1995

[bors]

⌛ Testing commit a4acb31 with merge 7079de9...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: flip1995
Pushing 7079de9 to master...