[metacity] data: add translators comment for icon name

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 0a533edc82c74f94d91a4496f4ce85c49f240049
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Mar 31 18:46:55 2016 +0300

    data: add translators comment for icon name

 data/applications/metacity.desktop.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/applications/metacity.desktop.in b/data/applications/metacity.desktop.in
index b1d02f3..08e82d2 100644
--- a/data/applications/metacity.desktop.in
+++ b/data/applications/metacity.desktop.in
@@ -2,6 +2,7 @@
 Type=Application
 Name=Metacity
 Exec=metacity
+# TRANSLATORS: Don't translate this text (this is icon name)
 Icon=preferences-system-windows
 NoDisplay=true
 X-GNOME-Bugzilla-Bugzilla=GNOME