German l10n: changed the proposed translation to a more formal one, which is...

German l10n: changed the proposed translation to a more formal one, which is more appropriate in this context.
(cherry picked from commit 9fa5b7ae718430f3da64d853be3bd26e4d66b12e)
Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

share/vlc.desktop

@@ -5,7 +5,7 @@ Comment=Read, capture, broadcast your multimedia streams
 Name[ca]=Reproductor multimèdia VLC
 Comment[ca]=Reproduïu, captureu i difoneu fluxos multimèdia
 Name[de]=VLC Media Player
-Comment[de]=Spiele ab, nehme auf, sende Deine Multimedia-Streams
+Comment[de]=Wiedergabe, Aufnahme und Verbreitung Ihrer Multimedia-Streams
 Name[es]=Reproductor multimedia VLC
 Comment[es]=Lea, capture y emita sus contenidos multimedia
 Name[et]=VLC meediaesitaja