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/bin/runtime-common/src/messages_api.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
 
-//! Helpers for implementing various message-related runtime API mthods.
+//! Helpers for implementing various message-related runtime API methods.
 
 use bp_messages::{
 	InboundMessageDetails, LaneId, MessageNonce, MessagePayload, OutboundMessageDetails,

bridges/bin/runtime-common/src/messages_xcm_extension.rs

@@ -248,7 +248,7 @@ impl<H: XcmBlobHauler> LocalXcmQueueManager<H> {
 		sender_and_lane: &SenderAndLane,
 		enqueued_messages: MessageNonce,
 	) {
-		// skip if we dont want to handle congestion
+		// skip if we don't want to handle congestion
 		if !H::supports_congestion_detection() {
 			return
 		}

bridges/bin/runtime-common/src/mock.rs

@@ -379,7 +379,7 @@ impl Chain for BridgedUnderlyingChain {
 impl ChainWithGrandpa for BridgedUnderlyingChain {
 	const WITH_CHAIN_GRANDPA_PALLET_NAME: &'static str = "";
 	const MAX_AUTHORITIES_COUNT: u32 = 16;
-	const REASONABLE_HEADERS_IN_JUSTIFICATON_ANCESTRY: u32 = 8;
+	const REASONABLE_HEADERS_IN_JUSTIFICATION_ANCESTRY: u32 = 8;
 	const MAX_MANDATORY_HEADER_SIZE: u32 = 256;
 	const AVERAGE_HEADER_SIZE: u32 = 64;
 }

bridges/bin/runtime-common/src/priority_calculator.rs

@@ -163,7 +163,7 @@ mod integrity_tests {
 	{
 		// just an estimation of extra transaction bytes that are added to every transaction
 		// (including signature, signed extensions extra and etc + in our case it includes
-		// all call arguments extept the proof itself)
+		// all call arguments except the proof itself)
 		let base_tx_size = 512;
 		// let's say we are relaying similar small messages and for every message we add more trie
 		// nodes to the proof (x0.5 because we expect some nodes to be reused)

bridges/bin/runtime-common/src/refund_relayer_extension.rs

@@ -1538,7 +1538,7 @@ mod tests {
 	}
 
 	#[test]
-	fn validate_boosts_priority_of_message_delivery_transactons() {
+	fn validate_boosts_priority_of_message_delivery_transactions() {
 		run_test(|| {
 			initialize_environment(100, 100, 100);
 
@@ -1568,7 +1568,7 @@ mod tests {
 	}
 
 	#[test]
-	fn validate_does_not_boost_priority_of_message_delivery_transactons_with_too_many_messages() {
+	fn validate_does_not_boost_priority_of_message_delivery_transactions_with_too_many_messages() {
 		run_test(|| {
 			initialize_environment(100, 100, 100);