docs.rs failed to build because `roff` is using a removed feature

[KSXGitHub]

Build log: https://docs.rs/crate/roff/1.1.0/builds/3004820.

[INFO] [stderr]  Documenting roff v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]   --> src/lib.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![cfg_attr(docsrs, feature(doc_auto_cfg))]
[INFO] [stderr]    |                             ^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]    |
[INFO] [stderr]    = note: removed in 1.92.0; see <https://github.com/rust-lang/rust/pull/138907> for more information
[INFO] [stderr]    = note: merged into `doc_cfg`
[INFO] [stderr] 
[INFO] [stderr] error: Compilation failed, aborting rustdoc
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: could not document `roff`

[epage]

Looks like we had a botched template update, making us lose this fix.