Recommend official Linux RT packages on wiki page

[Hector Oron <hector.oron@gmail.com>]

Hello,

  I have re-worded comment about Linux RT kernel on DebianMultimedia
wiki page, so it now points to the official kernel packages.
  < http://wiki.debian.org/DebianMultimedia#Realtime_kernel >

  I'd like to make sure it is not a problem by dropping an email to
the mailing list, as Jonas suggested me to do via IRC.

Cheers,
-- 
 Héctor Orón  -.. . -... .. .- -.   -.. . ...- . .-.. --- .--. . .-.