--help output wrongly states that count is in bytes, but it is blocks

[Celica7101]

--help output wrongly states that count is in bytes, but it is blocks

modify --help output to note that Count=N is in blocks (relative to the size of the block either defaulted or passed in via bs=Y)

[Celica7101]

./fastdd: Fast diskcopy.

Usage: ./fastdd [options] [arguments]

Arguments:
if=FILE Read input from FILE [STDIN]
of=FILE Write output to FILE [STDOUT]
bs=N Use N as the input/output blocksize [512]
count=N Copy N bytes from infile to outfile [Till EOF] <============
skip=N Skip first N bytes of the input [0]
seek=N Seek to offset N before first write to output [0]
iosize=N Do I/O in chunks of N bytes [64kB]
iflag=IF One or more input flags for I/O (nonblock) []
oflag=OF One or more flags for output file I/O (nonblock,excl,sync,trunc,creat) []