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/primitives/runtime/src/generic/unchecked_extrinsic.rs

@@ -40,7 +40,7 @@ use sp_std::{fmt, prelude::*};
 /// the decoding fails.
 const EXTRINSIC_FORMAT_VERSION: u8 = 4;
 
-/// The `SingaturePayload` of `UncheckedExtrinsic`.
+/// The `SignaturePayload` of `UncheckedExtrinsic`.
 type UncheckedSignaturePayload<Address, Signature, Extra> = (Address, Signature, Extra);
 
 /// An extrinsic right from the external world. This is unchecked and so can contain a signature.

substrate/primitives/runtime/src/offchain/storage_lock.rs

@@ -556,7 +556,7 @@ mod tests {
 			let res = lock.try_lock();
 			assert_eq!(res.is_ok(), false);
 
-			// sleep again untill sleep_until > deadline
+			// sleep again until sleep_until > deadline
 			offchain::sleep_until(offchain::timestamp().add(Duration::from_millis(200)));
 
 			// the lock has expired, failed to extend it

substrate/primitives/runtime/src/testing.rs

@@ -284,9 +284,9 @@ where
 }
 
 /// The signature payload of a `TestXt`.
-type TxSingaturePayload<Extra> = (u64, Extra);
+type TxSignaturePayload<Extra> = (u64, Extra);
 
-impl<Extra: TypeInfo> SignaturePayload for TxSingaturePayload<Extra> {
+impl<Extra: TypeInfo> SignaturePayload for TxSignaturePayload<Extra> {
 	type SignatureAddress = u64;
 	type Signature = ();
 	type SignatureExtra = Extra;
@@ -299,7 +299,7 @@ impl<Extra: TypeInfo> SignaturePayload for TxSingaturePayload<Extra> {
 #[derive(PartialEq, Eq, Clone, Encode, Decode, TypeInfo)]
 pub struct TestXt<Call, Extra> {
 	/// Signature of the extrinsic.
-	pub signature: Option<TxSingaturePayload<Extra>>,
+	pub signature: Option<TxSignaturePayload<Extra>>,
 	/// Call of the extrinsic.
 	pub call: Call,
 }
@@ -348,7 +348,7 @@ impl<Call: Codec + Sync + Send + TypeInfo, Extra: TypeInfo> traits::Extrinsic
 	for TestXt<Call, Extra>
 {
 	type Call = Call;
-	type SignaturePayload = TxSingaturePayload<Extra>;
+	type SignaturePayload = TxSignaturePayload<Extra>;
 
 	fn is_signed(&self) -> Option<bool> {
 		Some(self.signature.is_some())

substrate/primitives/runtime/src/traits.rs

@@ -330,7 +330,7 @@ impl<T, A: Into<T>> Morph<A> for MorphInto<T> {
 	}
 }
 
-/// Implementation of `TryMorph` which attmepts to convert between types using `TryInto`.
+/// Implementation of `TryMorph` which attempts to convert between types using `TryInto`.
 pub struct TryMorphInto<T>(sp_std::marker::PhantomData<T>);
 impl<T, A: TryInto<T>> TryMorph<A> for TryMorphInto<T> {
 	type Outcome = T;
@@ -1449,7 +1449,7 @@ pub trait Dispatchable {
 	/// to represent the dispatch class and weight.
 	type Info;
 	/// Additional information that is returned by `dispatch`. Can be used to supply the caller
-	/// with information about a `Dispatchable` that is ownly known post dispatch.
+	/// with information about a `Dispatchable` that is only known post dispatch.
 	type PostInfo: Eq + PartialEq + Clone + Copy + Encode + Decode + Printable;
 	/// Actually dispatch this call and return the result of it.
 	fn dispatch(self, origin: Self::RuntimeOrigin)