There is no direct entry screen for the 1099-K , you enter it as you did as business income not reported on a form 1099-NEC. It is unlikely the IRS will read the description you entered for your business income.
I understand your concern that the 1099-K income is in your name but will appear on your spouse's business schedule C. It is possible that this could cause an issue, however you have reported the income properly so you have a good explanation if the IRS should query you about it later. If you want, you could make a business entry for yourself, reporting the income under your name, and then enter a "Commission" expense for the same amount as the income so your net income will be zero.
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