tor-geoip: Fix a doc warning
cargo doc --locked --document-private-items --workspace --all-features
warning: unclosed HTML tag CountryCode
--> crates/tor-geoip/src/lib.rs:90:54
|
90 | /// We store these as NonZeroU8 so that an Option only has to
| ^^^^^^^^^^^^^
|
= note: #[warn(rustdoc::invalid_html_tags)]
on by default