Fix `rustfmt` issues in `dev_servers.rs` (#12205)

This PR fixes some issues preventing `rustfmt` from running properly in
`dev_servers.rs`.

The culprit was some long strings being inlined.

Release Notes:

- N/A
951fbc57baMarshall Bowers committed on 5/23/2024, 3:46:15 PM· committed by GitHubparente903742
1 file changedLine totals unavailable