doc: swap 'hyphen' and 'minus' in PostScript definition
doc: swap 'hyphen' and 'minus' in PostScript definition

It appears that at least with the Adobe Source fonts:

'hyphen' -> U+002D (ASCII)
'minus'  -> U+2212

This is ugly for cut & paste purposes.

Reported-by: C. Masloch <33adfa7aa2bbcf32c58163f4aa6af99d90610803@ulukai.org>
Signed-off-by: H. Peter Anvin (Intel) <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>

techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm