chore: spellchecker fixes (#1130)

bridges/relays/lib-substrate-relay/src/finality_pipeline.rs

@@ -30,7 +30,7 @@ use std::{fmt::Debug, marker::PhantomData, time::Duration};
 /// this timeout is used.
 ///
 /// There are no any strict requirements on block time in Substrate. But we assume here that all
-/// Substrate-based chains will be designed to produce relatively fast (compared to slowest
+/// Substrate-based chains will be designed to produce relatively fast (compared to the slowest
 /// blockchains) blocks. So 1 hour seems to be a good guess for (even congested) chains to mine
 /// transaction, or remove it from the pool.
 pub(crate) const STALL_TIMEOUT: Duration = Duration::from_secs(60 * 60);

bridges/relays/lib-substrate-relay/src/messages_source.rs

@@ -299,7 +299,7 @@ fn prepare_dummy_messages_delivery_proof<SC: Chain, TC: Chain>() -> SubstrateMes
 ///
 /// This function assumes that the chain that is followed by the `self_client` has
 /// bridge GRANDPA pallet deployed and it provides `best_finalized_header_id_method_name`
-/// runtime API to read best finalized Bridged chain header.
+/// runtime API to read the best finalized Bridged chain header.
 pub async fn read_client_state<SelfChain, BridgedHeaderHash, BridgedHeaderNumber>(
 	self_client: &Client<SelfChain>,
 	best_finalized_header_id_method_name: &str,

bridges/relays/lib-substrate-relay/src/messages_target.rs

@@ -377,7 +377,7 @@ where
 		.unwrap_or_else(|_| SC::Balance::max_value())
 }
 
-/// Compute fee multiplier that is used by the chain, given couple of fees for transactions
+/// Compute fee multiplier that is used by the chain, given a couple of fees for transactions
 /// that are only differ in dispatch weights.
 ///
 /// This function assumes that standard transaction payment pallet is used by the chain.