Interface_USB: Fix encoding issues in DCM file
It seems that during a descriptions update some rare characters got into a DCM file in https://github.com/KiCad/kicad-symbols/commit/9c63ffd7bac0294724b88669c2c2d837bac95504#diff-53710c242b8a37ab5f0e1e83f9809318.
I've restored those to UTF-8 hyphens so that my check scripts wouldn't crash.
Asking for @Ratfink supervision as he made the changes originally.