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-interface/test-wasm/src/lib.rs

@@ -126,21 +126,21 @@ pub trait TestApi {
 		val
 	}
 
-	fn test_versionning(&self, data: u32) -> bool {
+	fn test_versioning(&self, data: u32) -> bool {
 		data == 42 || data == 50
 	}
 
 	#[version(2)]
-	fn test_versionning(&self, data: u32) -> bool {
+	fn test_versioning(&self, data: u32) -> bool {
 		data == 42
 	}
 
-	fn test_versionning_register_only(&self, data: u32) -> bool {
+	fn test_versioning_register_only(&self, data: u32) -> bool {
 		data == 80
 	}
 
 	#[version(2, register_only)]
-	fn test_versionning_register_only(&self, data: u32) -> bool {
+	fn test_versioning_register_only(&self, data: u32) -> bool {
 		data == 42
 	}
 
@@ -282,21 +282,21 @@ wasm_export_functions! {
 		assert_eq!(0, len);
 	}
 
-	fn test_versionning_works() {
+	fn test_versioning_works() {
 		// we fix new api to accept only 42 as a proper input
 		// as opposed to sp-runtime-interface-test-wasm-deprecated::test_api::verify_input
 		// which accepted 42 and 50.
-		assert!(test_api::test_versionning(42));
+		assert!(test_api::test_versioning(42));
 
-		assert!(!test_api::test_versionning(50));
-		assert!(!test_api::test_versionning(102));
+		assert!(!test_api::test_versioning(50));
+		assert!(!test_api::test_versioning(102));
 	}
 
-	fn test_versionning_register_only_works() {
+	fn test_versioning_register_only_works() {
 		// Ensure that we will import the version of the runtime interface function that
 		// isn't tagged with `register_only`.
-		assert!(!test_api::test_versionning_register_only(42));
-		assert!(test_api::test_versionning_register_only(80));
+		assert!(!test_api::test_versioning_register_only(42));
+		assert!(test_api::test_versioning_register_only(80));
 	}
 
 	fn test_return_input_as_tuple() {