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.~~

substrate/client/consensus/beefy/src/communication/mod.rs

@@ -99,7 +99,7 @@ mod cost {
 	// On-demand request was refused by peer.
 	pub(super) const REFUSAL_RESPONSE: Rep = Rep::new(-100, "BEEFY: Proof request refused");
 	// On-demand request for a proof that can't be found in the backend.
-	pub(super) const UNKOWN_PROOF_REQUEST: Rep = Rep::new(-150, "BEEFY: Unknown proof request");
+	pub(super) const UNKNOWN_PROOF_REQUEST: Rep = Rep::new(-150, "BEEFY: Unknown proof request");
 }
 
 // benefit scalars for reporting peers.

substrate/client/consensus/beefy/src/communication/request_response/incoming_requests_handler.rs

@@ -170,7 +170,7 @@ where
 			.flatten()
 			.and_then(|hash| self.client.justifications(hash).ok().flatten())
 			.and_then(|justifs| justifs.get(BEEFY_ENGINE_ID).cloned())
-			.ok_or_else(|| reputation_changes.push(cost::UNKOWN_PROOF_REQUEST));
+			.ok_or_else(|| reputation_changes.push(cost::UNKNOWN_PROOF_REQUEST));
 		request
 			.pending_response
 			.send(netconfig::OutgoingResponse {

substrate/client/consensus/beefy/src/keystore.rs

@@ -404,7 +404,7 @@ pub mod tests {
 
 		let store: BeefyKeystore<AuthorityId> = Some(store).into();
 
-		let msg = b"are you involved or commited?";
+		let msg = b"are you involved or committed?";
 
 		let sig1 = store.sign(&alice, msg).unwrap();
 		let sig2 = Keyring::<AuthorityId>::Alice.sign(msg);
@@ -440,7 +440,7 @@ pub mod tests {
 
 		let alice = Keyring::Alice.public();
 
-		let msg = b"are you involved or commited?";
+		let msg = b"are you involved or committed?";
 		let sig = store.sign(&alice, msg).err().unwrap();
 		let err = Error::Signature(expected_error_message.to_string());
 
@@ -463,7 +463,7 @@ pub mod tests {
 		let store: BeefyKeystore<ecdsa_crypto::Public> = None.into();
 
 		let alice = Keyring::Alice.public();
-		let msg = b"are you involved or commited";
+		let msg = b"are you involved or committed";
 
 		let sig = store.sign(&alice, msg).err().unwrap();
 		let err = Error::Keystore("no Keystore".to_string());
@@ -487,7 +487,7 @@ pub mod tests {
 		let alice = Keyring::Alice.public();
 
 		// `msg` and `sig` match
-		let msg = b"are you involved or commited?";
+		let msg = b"are you involved or committed?";
 		let sig = store.sign(&alice, msg).unwrap();
 		assert!(BeefyKeystore::verify(&alice, &sig, msg));
 

substrate/client/consensus/beefy/src/worker.rs

@@ -76,13 +76,13 @@ pub(crate) enum RoundAction {
 pub(crate) struct VoterOracle<B: Block> {
 	/// Queue of known sessions. Keeps track of voting rounds (block numbers) within each session.
 	///
-	/// There are three voter states coresponding to three queue states:
+	/// There are three voter states corresponding to three queue states:
 	/// 1. voter uninitialized: queue empty,
 	/// 2. up-to-date - all mandatory blocks leading up to current GRANDPA finalized: queue has ONE
 	///    element, the 'current session' where `mandatory_done == true`,
 	/// 3. lagging behind GRANDPA: queue has [1, N] elements, where all `mandatory_done == false`.
-	///    In this state, everytime a session gets its mandatory block BEEFY finalized, it's popped
-	///    off the queue, eventually getting to state `2. up-to-date`.
+	///    In this state, every time a session gets its mandatory block BEEFY finalized, it's
+	///    popped off the queue, eventually getting to state `2. up-to-date`.
 	sessions: VecDeque<Rounds<B>>,
 	/// Min delta in block numbers between two blocks, BEEFY should vote on.
 	min_block_delta: u32,