updateMarketingWallet() Function

[drewroberts]

This function updates the marketing wallet in the contract.

[drewroberts]

Here is that function in my old contract standard:

    function updateMarketingWallet(address _marketingWallet)
        external
        onlyOwner
    {
        require(_marketingWallet != address(0), "ERC20: Address 0");
        address oldWallet = marketingWallet;
        marketingWallet = _marketingWallet;
        emit marketingWalletUpdated(marketingWallet, oldWallet);
    }