[docs] [issue9738] Document the encoding of functions bytes arguments of the C API

Dave Malcolm <dmalcolm@redhat.com> added the comment:

I think either of these is correct: - a UTF-8-encoded string - a string encoded in UTF-8

Possibly use the word "buffer" here, rather than "string", as "string" may suggest the "str" type. Or even: "NUL-terminated buffer of UTF-8-encoded bytes", or whatnot. (sorry for bikeshedding) ---------- nosy: +dmalcolm _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue9738> _______________________________________