Further clarify the release checklist
Further clarify the release checklist

xeno-by/scalameta,xeno-by/scalameta,scalameta/scalameta,olafurpg/scalameta,scalameta/scalameta,scalameta/scalameta,olafurpg/scalameta,xeno-by/scalameta,MasseGuillaume/scalameta,scalameta/scalameta,MasseGuillaume/scalameta,scalameta/scalameta,MasseGuillaume/scalameta,olafurpg/scalameta