Update CONTRIBUTING.md
Update CONTRIBUTING.md

webtorrent/webtorrent,jamesliu96/webtorrent,webtorrent/webtorrent,feross/webtorrent,jamesliu96/webtorrent,joshterrill/webtorrent,yciabaud/webtorrent,feross/webtorrent,joshterrill/webtorrent,yciabaud/webtorrent