separate doc heading from body

[tshepang]

If you look at target/doc/cargo_registry/util/index.html, you will see this heading after errors:

This module implements several error types and traits. The suggested usage in returned results is as follows:

The first line is taken as a heading, so should remain separate, so that it's readable as a summary.

[rust-highfive]

r? @jtgeibel

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[Turbo87]

@tshepang an you add a pull request description explaining what you're changing here and why you're changing it? 🙏

[tshepang]

just did @Turbo87

[Turbo87]

I see what you mean:

makes sense, thanks!

@bors r+

[bors]

📌 Commit 588da69 has been approved by Turbo87

[bors]

⌛ Testing commit 588da69 with merge f7096cc...

[bors]

☀️ Test successful - checks-actions
Approved by: Turbo87
Pushing f7096cc to master...