That place is one of the reasons Map Maker went away :). People would make named shapes but not continue and make the actual place of interest. The best way forward is to send feedback about the place reporting the issue within the App.
As @PaulPavlinovich mentioned there are certain items in Google Maps that you cannot edit and these include landmarks, established points-of-interests or even the names of a city/township - Only Google can edit these although you can always send feedback and suggest your changes through Google maps.
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2022
