Add info about Arch Linux package
Add info about Arch Linux package

olafurpg/scalafmt,scalameta/scalafmt,Daxten/scalafmt,scalameta/scalafmt,olafurpg/scalafmt,olafurpg/scalafmt,Daxten/scalafmt,olafurpg/scalafmt,scalameta/scalafmt,scalameta/scalafmt