Reword description of where Kakoune user configuration folder is located
Reword description of where Kakoune user configuration folder is located

This should make it more explicit that we fallback onto ~/.config/kak.

Fixes #2345

lenormf/kakoune,mawww/kakoune,jjthrash/kakoune,casimir/kakoune,lenormf/kakoune,mawww/kakoune,danr/kakoune,occivink/kakoune,lenormf/kakoune,casimir/kakoune,occivink/kakoune,danr/kakoune,jkonecny12/kakoune,mawww/kakoune,Somasis/kakoune,jkonecny12/kakoune,mawww/kakoune,Somasis/kakoune,danr/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,Somasis/kakoune,jjthrash/kakoune,casimir/kakoune,Somasis/kakoune,occivink/kakoune,lenormf/kakoune,alexherbo2/kakoune,occivink/kakoune,jjthrash/kakoune,danr/kakoune,casimir/kakoune,alexherbo2/kakoune,jjthrash/kakoune