srml-contracts: minor documentation improvements (#3086)

* fix typos

* update information about ink

* fix typos

* fix typo

* fix typos

substrate/srml/contracts/src/account_db.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Substrate. If not, see <http://www.gnu.org/licenses/>.
 
-//! Auxilliaries to help with managing partial changes to accounts state.
+//! Auxiliaries to help with managing partial changes to accounts state.
 
 use super::{
 	AliveContractInfo, BalanceOf, CodeHash, ContractInfo, ContractInfoOf, Trait, TrieId,

substrate/srml/contracts/src/exec.rs

@@ -69,7 +69,7 @@ pub trait Ext {
 	/// Instantiate a contract from the given code.
 	///
 	/// The newly created account will be associated with `code`. `value` specifies the amount of value
-	/// transfered from this to the newly created account (also known as endowment).
+	/// transferred from this to the newly created account (also known as endowment).
 	fn instantiate(
 		&mut self,
 		code: &CodeHash<Self::T>,
@@ -78,7 +78,7 @@ pub trait Ext {
 		input_data: &[u8],
 	) -> Result<InstantiateReceipt<AccountIdOf<Self::T>>, &'static str>;
 
-	/// Call (possibly transfering some amount of funds) into the specified account.
+	/// Call (possibly transferring some amount of funds) into the specified account.
 	fn call(
 		&mut self,
 		to: &AccountIdOf<Self::T>,
@@ -102,7 +102,7 @@ pub trait Ext {
 	/// The `value_transferred` is already added.
 	fn balance(&self) -> BalanceOf<Self::T>;
 
-	/// Returns the value transfered along with this call or as endowment.
+	/// Returns the value transferred along with this call or as endowment.
 	fn value_transferred(&self) -> BalanceOf<Self::T>;
 
 	/// Returns a reference to the timestamp of the current block
@@ -304,7 +304,7 @@ where
 		}
 	}
 
-	/// Make a call to the specified address, optionally transfering some funds.
+	/// Make a call to the specified address, optionally transferring some funds.
 	pub fn call(
 		&mut self,
 		dest: T::AccountId,
@@ -504,7 +504,7 @@ enum TransferCause {
 ///
 /// This function also handles charging the fee. The fee depends
 /// on whether the transfer happening because of contract instantiation
-/// (transfering endowment) or because of a transfer via `call`. This
+/// (transferring endowment) or because of a transfer via `call`. This
 /// is specified using the `cause` parameter.
 ///
 /// NOTE: that the fee is denominated in `BalanceOf<T>` units, but

substrate/srml/contracts/src/gas.rs

@@ -274,7 +274,7 @@ macro_rules! match_tokens {
 			// have an iterator of Box<dyn Any> and to downcast we need to specify
 			// the type which we want downcast to.
 			//
-			// So what we do is we assign `_pattern_typed_next_ref` to the a variable which has
+			// So what we do is we assign `_pattern_typed_next_ref` to a variable which has
 			// the required type.
 			//
 			// Then we make `_pattern_typed_next_ref = token.downcast_ref()`. This makes
@@ -366,7 +366,7 @@ mod tests {
 	// Make sure that if the gas meter is charged by exceeding amount then not only an error
 	// returned for that charge, but also for all consequent charges.
 	//
-	// This is not striclty necessary, because the execution should be interrupred immediatelly
+	// This is not strictly necessary, because the execution should be interrupted immediately
 	// if the gas meter runs out of gas. However, this is just a nice property to have.
 	#[test]
 	fn overcharge_is_unrecoverable() {

substrate/srml/contracts/src/lib.rs

@@ -68,7 +68,8 @@
 //! The Contract module is a work in progress. The following examples show how this Contract module can be
 //! used to create and call contracts.
 //!
-//! * [`pDSL`](https://github.com/Robbepop/pdsl) is a domain specific language that enables writing
+//! * [`ink`](https://github.com/paritytech/ink) is 
+//! an [`eDSL`](https://wiki.haskell.org/Embedded_domain_specific_language) that enables writing
 //! WebAssembly based smart contracts in the Rust programming language. This is a work in progress.
 //!
 //! ## Related Modules
@@ -158,7 +159,7 @@ impl<T: Trait> ContractInfo<T> {
 		}
 	}
 
-	/// If contract is tombstone then return some alive info
+	/// If contract is tombstone then return some tombstone info
 	pub fn get_tombstone(self) -> Option<TombstoneContractInfo<T>> {
 		if let ContractInfo::Tombstone(tombstone) = self {
 			Some(tombstone)
@@ -313,7 +314,7 @@ pub trait Trait: timestamp::Trait {
 	/// by the Executive module for regular dispatch.
 	type ComputeDispatchFee: ComputeDispatchFee<Self::Call, BalanceOf<Self>>;
 
-	/// trieid id generator
+	/// trie id generator
 	type TrieIdGenerator: TrieIdGenerator<Self::AccountId>;
 
 	/// Handler for the unbalanced reduction when making a gas payment.
@@ -321,7 +322,7 @@ pub trait Trait: timestamp::Trait {
 
 	/// Number of block delay an extrinsic claim surcharge has.
 	///
-	/// When claim surchage is called by an extrinsic the rent is checked
+	/// When claim surcharge is called by an extrinsic the rent is checked
 	/// for current_block - delay
 	type SignedClaimHandicap: Get<Self::BlockNumber>;
 
@@ -421,7 +422,7 @@ decl_module! {
 	pub struct Module<T: Trait> for enum Call where origin: <T as system::Trait>::Origin {
 		/// Number of block delay an extrinsic claim surcharge has.
 		///
-		/// When claim surchage is called by an extrinsic the rent is checked
+		/// When claim surcharge is called by an extrinsic the rent is checked
 		/// for current_block - delay
 		const SignedClaimHandicap: T::BlockNumber = T::SignedClaimHandicap::get();