Fix spelling mistakes across the whole repository (#3808)

**Update:** Pushed additional changes based on the review comments.

**This pull request fixes various spelling mistakes in this
repository.**

Most of the changes are contained in the first **3** commits:

- `Fix spelling mistakes in comments and docs`

- `Fix spelling mistakes in test names`

- `Fix spelling mistakes in error messages, panic messages, logs and
tracing`

Other source code spelling mistakes are separated into individual
commits for easier reviewing:

- `Fix the spelling of 'authority'`

- `Fix the spelling of 'REASONABLE_HEADERS_IN_JUSTIFICATION_ANCESTRY'`

- `Fix the spelling of 'prev_enqueud_messages'`

- `Fix the spelling of 'endpoint'`

- `Fix the spelling of 'children'`

- `Fix the spelling of 'PenpalSiblingSovereignAccount'`

- `Fix the spelling of 'PenpalSudoAccount'`

- `Fix the spelling of 'insufficient'`

- `Fix the spelling of 'PalletXcmExtrinsicsBenchmark'`

- `Fix the spelling of 'subtracted'`

- `Fix the spelling of 'CandidatePendingAvailability'`

- `Fix the spelling of 'exclusive'`

- `Fix the spelling of 'until'`

- `Fix the spelling of 'discriminator'`

- `Fix the spelling of 'nonexistent'`

- `Fix the spelling of 'subsystem'`

- `Fix the spelling of 'indices'`

- `Fix the spelling of 'committed'`

- `Fix the spelling of 'topology'`

- `Fix the spelling of 'response'`

- `Fix the spelling of 'beneficiary'`

- `Fix the spelling of 'formatted'`

- `Fix the spelling of 'UNKNOWN_PROOF_REQUEST'`

- `Fix the spelling of 'succeeded'`

- `Fix the spelling of 'reopened'`

- `Fix the spelling of 'proposer'`

- `Fix the spelling of 'InstantiationNonce'`

- `Fix the spelling of 'depositor'`

- `Fix the spelling of 'expiration'`

- `Fix the spelling of 'phantom'`

- `Fix the spelling of 'AggregatedKeyValue'`

- `Fix the spelling of 'randomness'`

- `Fix the spelling of 'defendant'`

- `Fix the spelling of 'AquaticMammal'`

- `Fix the spelling of 'transactions'`

- `Fix the spelling of 'PassingTracingSubscriber'`

- `Fix the spelling of 'TxSignaturePayload'`

- `Fix the spelling of 'versioning'`

- `Fix the spelling of 'descendant'`

- `Fix the spelling of 'overridden'`

- `Fix the spelling of 'network'`

Let me know if this structure is adequate.

**Note:** The usage of the words `Merkle`, `Merkelize`, `Merklization`,
`Merkelization`, `Merkleization`, is somewhat inconsistent but I left it
as it is.

~~**Note:** In some places the term `Receival` is used to refer to
message reception, IMO `Reception` is the correct word here, but I left
it as it is.~~

~~**Note:** In some places the term `Overlayed` is used instead of the
more acceptable version `Overlaid` but I also left it as it is.~~

~~**Note:** In some places the term `Applyable` is used instead of the
correct version `Applicable` but I also left it as it is.~~

**Note:** Some usage of British vs American english e.g. `judgement` vs
`judgment`, `initialise` vs `initialize`, `optimise` vs `optimize` etc.
are both present in different places, but I suppose that's
understandable given the number of contributors.

~~**Note:** There is a spelling mistake in `.github/CODEOWNERS` but it
triggers errors in CI when I make changes to it, so I left it as it
is.~~

bridges/modules/messages/src/outbound_lane.rs

@@ -53,7 +53,7 @@ pub type StoredMessagePayload<T, I> = BoundedVec<u8, <T as Config<I>>::MaximalOu
 
 /// Result of messages receival confirmation.
 #[derive(Encode, Decode, RuntimeDebug, PartialEq, Eq, PalletError, TypeInfo)]
-pub enum ReceivalConfirmationError {
+pub enum ReceptionConfirmationError {
 	/// Bridged chain is trying to confirm more messages than we have generated. May be a result
 	/// of invalid bridged chain storage.
 	FailedToConfirmFutureMessages,
@@ -103,7 +103,7 @@ impl<S: OutboundLaneStorage> OutboundLane<S> {
 		max_allowed_messages: MessageNonce,
 		latest_delivered_nonce: MessageNonce,
 		relayers: &VecDeque<UnrewardedRelayer<RelayerId>>,
-	) -> Result<Option<DeliveredMessages>, ReceivalConfirmationError> {
+	) -> Result<Option<DeliveredMessages>, ReceptionConfirmationError> {
 		let mut data = self.storage.data();
 		let confirmed_messages = DeliveredMessages {
 			begin: data.latest_received_nonce.saturating_add(1),
@@ -113,7 +113,7 @@ impl<S: OutboundLaneStorage> OutboundLane<S> {
 			return Ok(None)
 		}
 		if confirmed_messages.end > data.latest_generated_nonce {
-			return Err(ReceivalConfirmationError::FailedToConfirmFutureMessages)
+			return Err(ReceptionConfirmationError::FailedToConfirmFutureMessages)
 		}
 		if confirmed_messages.total_messages() > max_allowed_messages {
 			// that the relayer has declared correct number of messages that the proof contains (it
@@ -127,7 +127,7 @@ impl<S: OutboundLaneStorage> OutboundLane<S> {
 				confirmed_messages.total_messages(),
 				max_allowed_messages,
 			);
-			return Err(ReceivalConfirmationError::TryingToConfirmMoreMessagesThanExpected)
+			return Err(ReceptionConfirmationError::TryingToConfirmMoreMessagesThanExpected)
 		}
 
 		ensure_unrewarded_relayers_are_correct(confirmed_messages.end, relayers)?;
@@ -176,24 +176,24 @@ impl<S: OutboundLaneStorage> OutboundLane<S> {
 fn ensure_unrewarded_relayers_are_correct<RelayerId>(
 	latest_received_nonce: MessageNonce,
 	relayers: &VecDeque<UnrewardedRelayer<RelayerId>>,
-) -> Result<(), ReceivalConfirmationError> {
+) -> Result<(), ReceptionConfirmationError> {
 	let mut expected_entry_begin = relayers.front().map(|entry| entry.messages.begin);
 	for entry in relayers {
 		// unrewarded relayer entry must have at least 1 unconfirmed message
 		// (guaranteed by the `InboundLane::receive_message()`)
 		if entry.messages.end < entry.messages.begin {
-			return Err(ReceivalConfirmationError::EmptyUnrewardedRelayerEntry)
+			return Err(ReceptionConfirmationError::EmptyUnrewardedRelayerEntry)
 		}
 		// every entry must confirm range of messages that follows previous entry range
 		// (guaranteed by the `InboundLane::receive_message()`)
 		if expected_entry_begin != Some(entry.messages.begin) {
-			return Err(ReceivalConfirmationError::NonConsecutiveUnrewardedRelayerEntries)
+			return Err(ReceptionConfirmationError::NonConsecutiveUnrewardedRelayerEntries)
 		}
 		expected_entry_begin = entry.messages.end.checked_add(1);
 		// entry can't confirm messages larger than `inbound_lane_data.latest_received_nonce()`
 		// (guaranteed by the `InboundLane::receive_message()`)
 		if entry.messages.end > latest_received_nonce {
-			return Err(ReceivalConfirmationError::FailedToConfirmFutureMessages)
+			return Err(ReceptionConfirmationError::FailedToConfirmFutureMessages)
 		}
 	}
 
@@ -228,7 +228,7 @@ mod tests {
 	fn assert_3_messages_confirmation_fails(
 		latest_received_nonce: MessageNonce,
 		relayers: &VecDeque<UnrewardedRelayer<TestRelayer>>,
-	) -> Result<Option<DeliveredMessages>, ReceivalConfirmationError> {
+	) -> Result<Option<DeliveredMessages>, ReceptionConfirmationError> {
 		run_test(|| {
 			let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
 			lane.send_message(outbound_message_data(REGULAR_PAYLOAD));
@@ -299,7 +299,7 @@ mod tests {
 	fn confirm_delivery_rejects_nonce_larger_than_last_generated() {
 		assert_eq!(
 			assert_3_messages_confirmation_fails(10, &unrewarded_relayers(1..=10),),
-			Err(ReceivalConfirmationError::FailedToConfirmFutureMessages),
+			Err(ReceptionConfirmationError::FailedToConfirmFutureMessages),
 		);
 	}
 
@@ -314,7 +314,7 @@ mod tests {
 					.chain(unrewarded_relayers(3..=3).into_iter())
 					.collect(),
 			),
-			Err(ReceivalConfirmationError::FailedToConfirmFutureMessages),
+			Err(ReceptionConfirmationError::FailedToConfirmFutureMessages),
 		);
 	}
 
@@ -330,7 +330,7 @@ mod tests {
 					.chain(unrewarded_relayers(2..=3).into_iter())
 					.collect(),
 			),
-			Err(ReceivalConfirmationError::EmptyUnrewardedRelayerEntry),
+			Err(ReceptionConfirmationError::EmptyUnrewardedRelayerEntry),
 		);
 	}
 
@@ -345,7 +345,7 @@ mod tests {
 					.chain(unrewarded_relayers(2..=2).into_iter())
 					.collect(),
 			),
-			Err(ReceivalConfirmationError::NonConsecutiveUnrewardedRelayerEntries),
+			Err(ReceptionConfirmationError::NonConsecutiveUnrewardedRelayerEntries),
 		);
 	}
 
@@ -409,11 +409,11 @@ mod tests {
 			lane.send_message(outbound_message_data(REGULAR_PAYLOAD));
 			assert_eq!(
 				lane.confirm_delivery(0, 3, &unrewarded_relayers(1..=3)),
-				Err(ReceivalConfirmationError::TryingToConfirmMoreMessagesThanExpected),
+				Err(ReceptionConfirmationError::TryingToConfirmMoreMessagesThanExpected),
 			);
 			assert_eq!(
 				lane.confirm_delivery(2, 3, &unrewarded_relayers(1..=3)),
-				Err(ReceivalConfirmationError::TryingToConfirmMoreMessagesThanExpected),
+				Err(ReceptionConfirmationError::TryingToConfirmMoreMessagesThanExpected),
 			);
 			assert_eq!(
 				lane.confirm_delivery(3, 3, &unrewarded_relayers(1..=3)),