[docs] [issue8925] Improve c-api/arg.rst: use "bytes" or "str" types instead of "string"

STINNER Victor <victor.stinner@haypocalc.com> added the comment:

Is there a reST construct to use here, say to reference a PEP or point to a glossary entry that defines this protocol?

buffer API ("protocol" ?) is documented in Doc/c-api/buffer.rst. Should I link to this document? How? ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue8925> _______________________________________