README.md: Add missing word
README.md: Add missing word

The word `sha1s' is MIA.  Add it.
cjb/GitTorrent,locusf/GitTorrent,larryaubstore/GitTorrent,coopsource/GitTorrent,therewillbecode/GitTorrent,wakermahmud/GitTorrent,cmotc/GitTorrent,bowlofstew/GitTorrent,anarcat/GitTorrent,eXcomm/GitTorrent,studio666/GitTorrent