Check out this node: https://www.openstreetmap.org/node/13191502812. It overlaps the neighboring fairway by mere millimeters, but is enough to trigger Q/A checks looking for egregious overlaps but finding all overlaps, no matter how small.

If you're interested in continuing golf course mapping long term, you might want to consider looking into using JOSM to do your edits. There are tools in there that make editing much easier. (But the interface takes getting used to.) For example, when I'm sharing the nodes on a border between two objects, I can just get one node on an existing node, and then determine the direction to travel by clicking on a second node, and then just press and hold "F" to make it continue joining all nodes on the existing path. Incredibly helpful.
