Before making further edits to golf courses, please review the following webpage for common pitfalls to avoid:

https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dgolf_course#:~:text=Wrapping%20polygon%20areas%20around%20a%20hole%20and%20leaving%20a%20tiny%20open%20gap.

In this case, do not fold an area back upon itself with a small gap to simulate a hole.  Multipolygon relations should be used instead.