improve Haddock for Locale.selectedFor
improve Haddock for Locale.selectedFor

Signed-off-by: Sean Whitton <716adde294942f5983c8f4e686a26b320f1056f0@spwhitton.name>
(cherry picked from commit ca016d391e2419856e1efc40cc977af6a99af7d6)

ArchiveTeam/glowing-computing-machine