fix: natspec for new undelegate error

Author: Maikol

packages/horizon/contracts/interfaces/internal/IHorizonStakingMain.sol

@@ -434,7 +434,7 @@ interface IHorizonStakingMain {
     error HorizonStakingInsufficientDelegationTokens(uint256 tokens, uint256 minTokens);
 
     /**
-     * @notice Thrown when the minimum token amount required for delegation with beneficiary is not met.
+     * @notice Thrown when the minimum token amount required for undelegation with beneficiary is not met.
      * @param tokens The actual token amount
      * @param minTokens The minimum required token amount
      */