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/frame/democracy/src/lib.rs

@@ -484,7 +484,7 @@ pub mod pallet {
 		Blacklisted { proposal_hash: T::Hash },
 		/// An account has voted in a referendum
 		Voted { voter: T::AccountId, ref_index: ReferendumIndex, vote: AccountVote<BalanceOf<T>> },
-		/// An account has secconded a proposal
+		/// An account has seconded a proposal
 		Seconded { seconder: T::AccountId, prop_index: PropIndex },
 		/// A proposal got canceled.
 		ProposalCanceled { prop_index: PropIndex },

substrate/frame/democracy/src/migrations/unlock_and_unreserve_all_funds.rs

@@ -321,40 +321,40 @@ mod test {
 	}
 
 	#[test]
-	fn unreserve_works_for_depositer() {
-		let depositer_0 = 10;
-		let depositer_1 = 11;
+	fn unreserve_works_for_depositor() {
+		let depositor_0 = 10;
+		let depositor_1 = 11;
 		let deposit = 25;
-		let depositer_0_initial_reserved = 0;
-		let depositer_1_initial_reserved = 15;
+		let depositor_0_initial_reserved = 0;
+		let depositor_1_initial_reserved = 15;
 		let initial_balance = 100_000;
 		new_test_ext().execute_with(|| {
 			// Set up initial state.
-			<Test as crate::Config>::Currency::make_free_balance_be(&depositer_0, initial_balance);
-			<Test as crate::Config>::Currency::make_free_balance_be(&depositer_1, initial_balance);
+			<Test as crate::Config>::Currency::make_free_balance_be(&depositor_0, initial_balance);
+			<Test as crate::Config>::Currency::make_free_balance_be(&depositor_1, initial_balance);
 			assert_ok!(<Test as crate::Config>::Currency::reserve(
-				&depositer_0,
-				depositer_0_initial_reserved + deposit
+				&depositor_0,
+				depositor_0_initial_reserved + deposit
 			));
 			assert_ok!(<Test as crate::Config>::Currency::reserve(
-				&depositer_1,
-				depositer_1_initial_reserved + deposit
+				&depositor_1,
+				depositor_1_initial_reserved + deposit
 			));
 			let depositors =
 				BoundedVec::<_, <Test as crate::Config>::MaxDeposits>::truncate_from(vec![
-					depositer_0,
-					depositer_1,
+					depositor_0,
+					depositor_1,
 				]);
 			DepositOf::<Test>::insert(0, (depositors, deposit));
 
 			// Sanity check: ensure initial reserved balance was set correctly.
 			assert_eq!(
-				<Test as crate::Config>::Currency::reserved_balance(&depositer_0),
-				depositer_0_initial_reserved + deposit
+				<Test as crate::Config>::Currency::reserved_balance(&depositor_0),
+				depositor_0_initial_reserved + deposit
 			);
 			assert_eq!(
-				<Test as crate::Config>::Currency::reserved_balance(&depositer_1),
-				depositer_1_initial_reserved + deposit
+				<Test as crate::Config>::Currency::reserved_balance(&depositor_1),
+				depositor_1_initial_reserved + deposit
 			);
 
 			// Run the migration.
@@ -365,12 +365,12 @@ mod test {
 
 			// Assert the reserved balance was reduced by the expected amount.
 			assert_eq!(
-				<Test as crate::Config>::Currency::reserved_balance(&depositer_0),
-				depositer_0_initial_reserved
+				<Test as crate::Config>::Currency::reserved_balance(&depositor_0),
+				depositor_0_initial_reserved
 			);
 			assert_eq!(
-				<Test as crate::Config>::Currency::reserved_balance(&depositer_1),
-				depositer_1_initial_reserved
+				<Test as crate::Config>::Currency::reserved_balance(&depositor_1),
+				depositor_1_initial_reserved
 			);
 		});
 	}

substrate/frame/democracy/src/tests.rs

@@ -62,7 +62,7 @@ frame_support::construct_runtime!(
 	}
 );
 
-// Test that a fitlered call can be dispatched.
+// Test that a filtered call can be dispatched.
 pub struct BaseFilter;
 impl Contains<RuntimeCall> for BaseFilter {
 	fn contains(call: &RuntimeCall) -> bool {

substrate/frame/democracy/src/tests/cancellation.rs

@@ -15,7 +15,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! The tests for cancelation functionality.
+//! The tests for cancellation functionality.
 
 use super::*;