Way way back when Gallium was made `auxiliary` was named `aux` but then it was
ported to Windows and it was renamed to `auxiliary` since Windows is [allergic to
filenames that match its device names](https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#naming-conventions)
(e.g., `AUX`, `CON`, `PRN`, etc.). Through the ages, this knowledge was lost
and so we find ourselves with the same problem. Although
Monado inherited the correct name, the same old mistake was made in docs.