For line 6, "In the Node Inputs pane, click Records
I do not see that here on my application. What am I doing wrong here?
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Looks like this particular spot in the documentation was missed for updating after the Write Records Smart Service evolved in 23.2 to move the primary setup functionality to the Setup Tab. You might use the feedback feature on that particular documentation page to alert them that it's out-of-date, though I assume someone will also see your post here.
I will send Feedback to notify them it's the "Setup Tab" not the Data tab where you select "Records".