Put identifiers and Wayland protocol names in doc comments in backticks
(`wl_output`, `zwp_tablet_v2`). Product names that docs write plainly
(GLib, HarfBuzz, HiDPI, JetBrains, MSBuild, StatusNotifierItem, VSync)
go in `doc-valid-idents` in clippy.toml, next to Clippy's default list.
Mechanical, with the lint enabled in Cargo.toml:
cargo clippy --fix --workspace --all-targets --all-features
cargo clippy --fix --workspace --all-targets --no-default-features
cargo fmt --all
Two comments that the fix could not mark up cleanly were reworded by
hand: the surface module summary and the zoom-chip invariant.
devmobasa