There is no sign at the site stating its name.
https://www.mapillary.com/app/?pKey=1386663542539685&focus=photo&lat=41.073082776424&lng=-85.218094362737&z=17&x=0.2733773663891471&y=0.5444617774942103&zoom=0

Giving it a name was a mistake. It must have been added by the template, at the time, when I used Vespucci.

"Tesla Supercharger" is a description, not a name. Done right, the tags will clearly describe it as a Tesla Supercharger. It would be redundant to also make up a name describing it. As the Wiki points out, adding names like that is a form of tagging for the renderer.
https://wiki.openstreetmap.org/wiki/Names#Names_are_not_for_descriptions

All that said, Tesla's website has since given it an official name.
https://www.tesla.com/findus?location=FortWayneINSupercharger

The Wiki says to append " Supercharger" to the official name.
https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dcharging_station/Tesla_Motors

That is what I have done.