Fix Typos

nil/getting-started/essentials/handling-async-execution.mdx

@@ -35,7 +35,7 @@ To initiate an async call, the 'caller' contract must have sufficient funds to p
 
 The [**`Nil.sol` extension library**](getting-started/prerequisites.mdx#solidity-library) also exposes the `awaitCall()` function.
 
-The function allows for calling another smart contract asynchronously and retrieving the result of the call. This is useful if the contract logic needs to mimick the typical `async`/`await` flow prevalent in programming languages other than Solidity. Note that the feature is currently experimental and may change in future releases.
+The function allows for calling another smart contract asynchronously and retrieving the result of the call. This is useful if the contract logic needs to mimic the typical `async`/`await` flow prevalent in programming languages other than Solidity. Note that the feature is currently experimental and may change in future releases.
 
 :::info[State]
 

nil/getting-started/working-with-smart-contracts/writing-a-contract.mdx

@@ -68,7 +68,7 @@ Contract 1 stores its owner's `pubkey`, which is useful for verifying external m
 
 ```
 
-The contract also conntains a simple mechanism for verifying external messages:
+The contract also contains a simple mechanism for verifying external messages:
 
 ```solidity showLineNumbers
 contract Manufacturer {

nil/reference/cli-reference.mdx

@@ -491,7 +491,7 @@ Transferred AMOUNT to TO_ADDRESS CurrencyId=[CURRENCY_ID]
 
 ## `receipt`
 
-This command is for retriving the receipt with the given hash.
+This command is for retrieving the receipt with the given hash.
 
 ### Subcommands