bug#36963: truncate man page

[David]

Hi 
This is not a bug, but a request to update documentation for truncate. It 
should state that truncate creates sparse files. 

Context: 
https://serverfault.com/questions/978325/used-truncate-to-create-huge-file-df-is-not-showing-decrease-in-available-spac/978339?noredirect=1#comment1273105_978339

Please let me know where I should route such requests to.

Thanks

-- 
David <address@hidden>