Apply suggestions from code review

Co-authored-by: Ernesto García <[email protected]>

.changeset/wise-bobcats-speak.md

@@ -2,4 +2,4 @@
 'openzeppelin-solidity': minor
 ---
 
-`VestinWalletWithCliff`: Add a extension of the `VestingWallet` contract with an added cliff.
+`VestinWalletWithCliff`: Add an extension of the `VestingWallet` contract with an added cliff.

contracts/finance/VestingWalletWithCliff.sol

@@ -8,11 +8,12 @@ import {VestingWallet} from "./VestingWallet.sol";
 /**
  * @dev Extension of {VestingWallet} that adds a cliff to the vesting schedule.
  */
-abstract contract VestingWalletWithCliff is VestingWallet {
+abstract contract VestingWalletCliff is VestingWallet {
     using SafeCast for *;
 
     uint64 private immutable _cliff;
 
+    /// @dev The specified cliff duration is larger than the vesting duration.
     error InvalidCliffDuration(uint64 cliffSeconds, uint64 durationSeconds);
 
     /**

test/finance/VestingWalletWithCliff.test.js

@@ -71,7 +71,7 @@ describe('VestingWallet', function () {
     Object.assign(this, await loadFixture(fixture));
   });
 
-  it('rejects zero address for beneficiary', async function () {
+  it('rejects a larger cliff than vesting duration', async function () {
     await expect(
       ethers.deployContract('$VestingWalletWithCliff', [
         this.beneficiary,