[evince] evince.desktop: add "viewer" to desktop keywords

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 6e29a9aba5f6743bb0c3ea043996abfea5adbd31
Author: Didier Roche <didrocks ubuntu com>
Date:   Thu Jul 20 08:26:27 2017 +0200

    evince.desktop: add "viewer" to desktop keywords
    
    As document is already in the list of keywords (duplicating Name), doing
    the same for the other commonly used keyword "viewer" for evince.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=671039

 data/evince.desktop.in.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/evince.desktop.in.in b/data/evince.desktop.in.in
index c5c0f7d..fbc3bf8 100644
--- a/data/evince.desktop.in.in
+++ b/data/evince.desktop.in.in
@@ -1,7 +1,7 @@
 [Desktop Entry]
 _Name=Document Viewer
 _Comment=View multi-page documents
-_Keywords=pdf;ps;postscript;dvi;xps;djvu;tiff;document;presentation;
+_Keywords=pdf;ps;postscript;dvi;xps;djvu;tiff;document;presentation;viewer;
 TryExec=evince
 Exec=evince %U
 StartupNotify=true