changes: document bigendian UTF-16/UTF-32 support
changes: document bigendian UTF-16/UTF-32 support

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>

letolabs/nasm,letolabs/nasm,projedi/nasm,turingstudio/nasm,turingstudio/nasm,projedi/nasm,Distrotech/nasm,projedi/nasm,techkey/nasm,techkey/nasm,Distrotech/nasm,Distrotech/nasm,turingstudio/nasm,techkey/nasm,techkey/nasm,projedi/nasm,letolabs/nasm,projedi/nasm,turingstudio/nasm,Distrotech/nasm,techkey/nasm