Direwolf Github readme.md has wrong character in build instructions

[dranch]

The dash in the readme.md documentation in the line "make -j4" is the wrong character (it's a unicode) character but make expects a "dash" ASCII character. This is tripping up users.

[wb2osz]

Fixed.
It was caused by a copy-n-paste from a different document.
Here is a handy way to find non-ASCII characters:
grep --color='auto' -P -n "[^\x00-\x7f]" README.md