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/support/procedural/src/lib.rs

@@ -137,7 +137,7 @@ fn counter_prefix(prefix: &str) -> String {
 ///   - `Call` - If the pallet has callable functions
 ///   - `Storage` - If the pallet uses storage
 ///   - `Event` or `Event<T>` (if the event is generic) - If the pallet emits events
-///   - `Origin` or `Origin<T>` (if the origin is generic) - If the pallet has instanciable origins
+///   - `Origin` or `Origin<T>` (if the origin is generic) - If the pallet has instantiable origins
 ///   - `Config` or `Config<T>` (if the config is generic) - If the pallet builds the genesis
 ///     storage with `GenesisConfig`
 ///   - `Inherent` - If the pallet provides/can check inherents.
@@ -166,7 +166,7 @@ fn counter_prefix(prefix: &str) -> String {
 ///   and `Event` are encoded, and to define the ModuleToIndex value.
 ///
 ///   if `= $n` is not given, then index is resolved in the same way as fieldless enum in Rust
-///   (i.e. incrementedly from previous index):
+///   (i.e. incrementally from previous index):
 ///   ```nocompile
 ///   pallet1 .. = 2,
 ///   pallet2 .., // Here pallet2 is given index 3
@@ -460,7 +460,7 @@ pub fn storage_alias(attributes: TokenStream, input: TokenStream) -> TokenStream
 }
 
 /// This attribute can be used to derive a full implementation of a trait based on a local partial
-/// impl and an external impl containing defaults that can be overriden in the local impl.
+/// impl and an external impl containing defaults that can be overridden in the local impl.
 ///
 /// For a full end-to-end example, see [below](#use-case-auto-derive-test-pallet-config-traits).
 ///