New comment by Chocimier on void-packages repository

https://github.com/void-linux/void-packages/pull/20735#issuecomment-616717743

Comment:
Install.msg is meant for most important messages like possible data loss or being locked out (openssh) or so. Optional dependencies will stay here for now, but there is proposal that they will be moved to xbps-query output.

I want to move other messages that are not trivial (`dhewm3` is, for example), into readmes.

For wiki, i won't move anything, just creating space for content that was asked to move to docs, but do not fit there.