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/construct_runtime/parse.rs

@@ -322,7 +322,7 @@ impl Parse for PalletDeclaration {
 /// A struct representing a path to a pallet. `PalletPath` is almost identical to the standard
 /// Rust path with a few restrictions:
 /// - No leading colons allowed
-/// - Path segments can only consist of identifers separated by colons
+/// - Path segments can only consist of identifiers separated by colons
 #[derive(Debug, Clone)]
 pub struct PalletPath {
 	pub inner: Path,
@@ -595,7 +595,7 @@ pub struct Pallet {
 	pub is_expanded: bool,
 	/// The name of the pallet, e.g.`System` in `System: frame_system`.
 	pub name: Ident,
-	/// Either automatically infered, or defined (e.g. `MyPallet ...  = 3,`).
+	/// Either automatically inferred, or defined (e.g. `MyPallet ...  = 3,`).
 	pub index: u8,
 	/// The path of the pallet, e.g. `frame_system` in `System: frame_system`.
 	pub path: PalletPath,
@@ -634,7 +634,7 @@ impl Pallet {
 /// +----------+    +----------+    +------------------+
 /// ```
 enum PalletsConversion {
-	/// Pallets implicitely declare parts.
+	/// Pallets implicitly declare parts.
 	///
 	/// `System: frame_system`.
 	Implicit(Vec<PalletDeclaration>),
@@ -648,7 +648,7 @@ enum PalletsConversion {
 	/// Pallets explicitly declare parts that are fully expanded.
 	///
 	/// This is the end state that contains extra parts included by
-	/// default by Subtrate.
+	/// default by Substrate.
 	///
 	/// `System: frame_system expanded::{Error} ::{Pallet, Call}`
 	///
@@ -660,7 +660,7 @@ enum PalletsConversion {
 ///
 /// Check if all pallet have explicit declaration of their parts, if so then assign index to each
 /// pallet using same rules as rust for fieldless enum. I.e. implicit are assigned number
-/// incrementedly from last explicit or 0.
+/// incrementally from last explicit or 0.
 fn convert_pallets(pallets: Vec<PalletDeclaration>) -> syn::Result<PalletsConversion> {
 	if pallets.iter().any(|pallet| pallet.pallet_parts.is_none()) {
 		return Ok(PalletsConversion::Implicit(pallets))