fixed typo in mmap example

[pintos-anon] / doc / mlfqs2i

#! /usr/bin/perl
print "0 0\n";
while (<>) {
    my ($ix, $iy) = /^(\d+) (\d+)$/ or die;
    my ($x) = ($ix - 201) / (443 - 201) * 60;
    my ($y) = ($iy - 456) / (645 - 456) * 25;
    printf "%.2f %.2f\n", $x, $y;
}