api: Fix doc

Author: frostyplanet

src/service.rs

@@ -8,9 +8,9 @@ use std::sync::Arc;
 /// Service handling code generated by macro
 ///
 /// A ServiceStatic can be:
-/// - #[service]: a class with multi method, if only one service, ignore `req.service`.
+/// - #[service]: a class with multi method, if only one service, ignore [ServerReq::service].
 /// - #[service_mux_struct]: a struct that contains several service, each field is a service,
-/// match `req.service` by `ServiceTrait::ServiceName` field
+/// match [ServerReq::service] by [ServiceStatic::SERVICE_NAME] field
 pub trait ServiceStatic<C: Codec>: Send + Sync + 'static + Sized {
     /// For server_mux_struct to match
     const SERVICE_NAME: &'static str;