Update README.asciidoc
Update README.asciidoc

Works fine on 18.04 too
danr/kakoune,lenormf/kakoune,lenormf/kakoune,mawww/kakoune,occivink/kakoune,Somasis/kakoune,danr/kakoune,casimir/kakoune,occivink/kakoune,danr/kakoune,danr/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,occivink/kakoune,mawww/kakoune,jkonecny12/kakoune,casimir/kakoune,jkonecny12/kakoune,lenormf/kakoune,Somasis/kakoune,casimir/kakoune,jkonecny12/kakoune,mawww/kakoune,Somasis/kakoune,alexherbo2/kakoune,casimir/kakoune,alexherbo2/kakoune,mawww/kakoune,Somasis/kakoune,occivink/kakoune,alexherbo2/kakoune,lenormf/kakoune