Please file an issue on the openhab1-addons repo here.
Though I will note that often the use of the term “binding configuration” is often used to refer to both the .cfg file for a given binding, and for the text between { } on an Item definition for 1.x version bindings. I’m certain you will find this “mistake” on many of the other 1.x version bindings and therefore I’m not sure I would call it a mistake.
Though it would be much clearer to not use the same term for both configs. But one needs to weight the effort of fixing this on all the 1.x binding readmes and change the verbal culture of the OH developers and users overall to fix some unclear nomenclature on bindings that will become obsolete eventually (this nomenclature problem does not exist in 2.x version bindings).