Fix spellcheck (#1110)

* fix spellcheck

* invariants

bridges/modules/ethereum/src/import.rs

@@ -29,7 +29,7 @@ use sp_std::{collections::btree_map::BTreeMap, prelude::*};
 /// If successful, returns tuple where first element is the number of useful headers
 /// we have imported and the second element is the number of useless headers (duplicate)
 /// we have NOT imported.
-/// Returns error if fatal error has occured during import. Some valid headers may be
+/// Returns error if fatal error has occurred during import. Some valid headers may be
 /// imported in this case.
 /// TODO: update me (https://github.com/paritytech/parity-bridges-common/issues/415)
 #[allow(clippy::too_many_arguments)]

bridges/modules/grandpa/src/benchmarking.rs

@@ -63,7 +63,7 @@ const MAX_VALIDATOR_SET_SIZE: u32 = 1024;
 
 /// Returns number of first header to be imported.
 ///
-/// Since we boostrap the pallet with `HeadersToKeep` already imported headers,
+/// Since we bootstrap the pallet with `HeadersToKeep` already imported headers,
 /// this function computes the next expected header number to import.
 fn header_number<T: Config<I>, I: 'static, N: From<u32>>() -> N {
 	(T::HeadersToKeep::get() + 1).into()

bridges/primitives/token-swap/src/lib.rs

@@ -27,7 +27,7 @@ pub enum TokenSwapType<ThisBlockNumber> {
 	/// The `target_account_at_bridged_chain` is temporary and only have funds for single swap.
 	///
 	/// ***WARNING**: if `target_account_at_bridged_chain` still exists after the swap has been
-	/// completed (either by claiming or cancelling), the `source_account_at_this_chain` will be able
+	/// completed (either by claiming or canceling), the `source_account_at_this_chain` will be able
 	/// to restart the swap again and repeat the swap until `target_account_at_bridged_chain` depletes.
 	TemporaryTargetAccountAtBridgedChain,
 	/// This swap type prevents `source_account_at_this_chain` from restarting the swap after it has

bridges/relays/bin-ethereum/src/rpc_errors.rs

@@ -27,7 +27,7 @@ pub enum RpcError {
 	Serialization(serde_json::Error),
 	/// An error occurred when interacting with an Ethereum node.
 	Ethereum(EthereumNodeError),
-	/// An error occured when interacting with a Substrate node.
+	/// An error occurred when interacting with a Substrate node.
 	Substrate(SubstrateNodeError),
 	/// Error running relay loop.
 	SyncLoop(String),

bridges/relays/headers/src/sync_types.rs

@@ -159,7 +159,7 @@ pub struct SubmittedHeaders<Id, Error> {
 	/// IDs of ignored headers that we have decided not to submit (they are either rejected by
 	/// target node immediately, or their descendants of incomplete headers).
 	pub rejected: Vec<Id>,
-	/// Fatal target node error, if it has occured during submission.
+	/// Fatal target node error, if it has occurred during submission.
 	pub fatal_error: Option<Error>,
 }