HOWTO.rst: fix typo
HOWTO.rst: fix typo
erasmospunk/electrumx,Crowndev/electrumx,thelazier/electrumx,shsmith/electrumx,shsmith/electrumx,erasmospunk/electrumx,Groestlcoin/electrumx-grs,Crowndev/electrumx,thelazier/electrumx,Groestlcoin/electrumx-grs