adds a link to the mempool channel ID

spec/p2p/reactors/mempool-v1.md

@@ -2,7 +2,7 @@
 
 The Celestia-core's p2p layer, which is a fork of CometBFT, consists of channels and reactors. Peers establish connections within specific channels, effectively forming peer-to-peer groups (each channel represents such a group). The transmission of messages within a channel is governed by the associated reactor, essentially containing the protocol rules for that channel.
 
-One notable channel is the mempool channel, identified as `MempoolChannel` with a specific channel ID of `0x30`. The mempool reactor manages the dissemination of transactions across the network. It's important to highlight that there's a direct correspondence between reactors and the channels they are connected to. Consequently, the mempool reactor is the exclusive reactor linked to the mempool channel with ID `0x30`. This document will provide an in-depth overview of the mempool reactor and its protocol, including an analysis of the mempool protocol's traffic rate.
+One notable channel is the mempool channel, identified as [`MempoolChannel`](https://github.com/celestiaorg/celestia-core/blob/3f3b7cc57f5cfc5e846ce781a9a407920e54fb72/mempool/mempool.go#L14) with a specific channel ID of `0x30`. The mempool reactor manages the dissemination of transactions across the network. It's important to highlight that there's a direct correspondence between reactors and the channels they are connected to. Consequently, the mempool reactor is the exclusive reactor linked to the mempool channel with ID `0x30`. This document will provide an in-depth overview of the mempool reactor and its protocol, including an analysis of the mempool protocol's traffic rate.
 
 ## Mempool Reactor
 A node can receive a transaction through one of two pathways: either a user initiates the transaction directly to the node, or the node acquires a transaction from another peer. Upon receiving a transaction, the following steps occur: