Use intra doc in network-gossip (#10501)

* Use intra doc in network-gossip

So that we could jump to the definition easily.

* cargo +nightly fmt --all

substrate/client/network-gossip/src/bridge.rs

@@ -39,7 +39,7 @@ use std::{
 	task::{Context, Poll},
 };
 
-/// Wraps around an implementation of the `Network` crate and provides gossiping capabilities on
+/// Wraps around an implementation of the [`Network`] trait and provides gossiping capabilities on
 /// top of it.
 pub struct GossipEngine<B: BlockT> {
 	state_machine: ConsensusGossip<B>,
@@ -56,7 +56,7 @@ pub struct GossipEngine<B: BlockT> {
 }
 
 /// A gossip engine receives messages from the network via the `network_event_stream` and forwards
-/// them to upper layers via the `message sinks`. In the scenario where messages have been received
+/// them to upper layers via the `message_sinks`. In the scenario where messages have been received
 /// from the network but a subscribed message sink is not yet ready to receive the messages, the
 /// messages are buffered. To model this process a gossip engine can be in two states.
 enum ForwardingState<B: BlockT> {

substrate/client/network-gossip/src/lib.rs

@@ -26,32 +26,32 @@
 //! message, assuming it is valid.
 //!
 //! Topics are a single 32-byte tag associated with a message, used to group those messages
-//! in an opaque way. Consensus code can invoke `broadcast_topic` to attempt to send all messages
-//! under a single topic to all peers who don't have them yet, and `send_topic` to
-//! send all messages under a single topic to a specific peer.
+//! in an opaque way. Consensus code can invoke [`ValidatorContext::broadcast_topic`] to
+//! attempt to send all messages under a single topic to all peers who don't have them yet, and
+//! [`ValidatorContext::send_topic`] to send all messages under a single topic to a specific peer.
 //!
 //! # Usage
 //!
-//! - Implement the `Network` trait, representing the low-level networking primitives. It is already
-//!   implemented on `sc_network::NetworkService`.
-//! - Implement the `Validator` trait. See the section below.
+//! - Implement the [`Network`] trait, representing the low-level networking primitives. It is
+//!   already implemented on `sc_network::NetworkService`.
+//! - Implement the [`Validator`] trait. See the section below.
 //! - Decide on a protocol name. Each gossiping protocol should have a different one.
-//! - Build a `GossipEngine` using these three elements.
-//! - Use the methods of the `GossipEngine` in order to send out messages and receive incoming
+//! - Build a [`GossipEngine`] using these three elements.
+//! - Use the methods of the [`GossipEngine`] in order to send out messages and receive incoming
 //!   messages.
 //!
-//! The `GossipEngine` will automatically use `Network::add_set_reserved` and
-//! `Network::remove_set_reserved` to maintain a set of peers equal to the set of peers the
+//! The [`GossipEngine`] will automatically use [`Network::add_set_reserved`] and
+//! [`Network::remove_set_reserved`] to maintain a set of peers equal to the set of peers the
 //! node is syncing from. See the documentation of `sc-network` for more explanations about the
 //! concepts of peer sets.
 //!
 //! # What is a validator?
 //!
-//! The primary role of a `Validator` is to process incoming messages from peers, and decide
+//! The primary role of a [`Validator`] is to process incoming messages from peers, and decide
 //! whether to discard them or process them. It also decides whether to re-broadcast the message.
 //!
-//! The secondary role of the `Validator` is to check if a message is allowed to be sent to a given
-//! peer. All messages, before being sent, will be checked against this filter.
+//! The secondary role of the [`Validator`] is to check if a message is allowed to be sent to a
+//! given peer. All messages, before being sent, will be checked against this filter.
 //! This enables the validator to use information it's aware of about connected peers to decide
 //! whether to send messages to them at any given moment in time - In particular, to wait until
 //! peers can accept and process the message before sending it.