[metacity] data: Fix translator comment in Icon key of the desktop file

[Piotr Drąg <piotrdrag src gnome org>]

commit 09b9d0e3055c2d82fbcbf5c679874f4d94f78932
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Sep 6 13:06:48 2020 +0200

    data: Fix translator comment in Icon key of the desktop file
    
    This exact wording will make Damned Lies ignore this key.

 data/applications/metacity.desktop.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/applications/metacity.desktop.in b/data/applications/metacity.desktop.in
index e50b1dcb..450ab505 100644
--- a/data/applications/metacity.desktop.in
+++ b/data/applications/metacity.desktop.in
@@ -2,7 +2,7 @@
 Type=Application
 Name=Metacity
 Exec=metacity
-# TRANSLATORS: Don't translate this text (this is icon name)
+# Translators: Do NOT translate or transliterate this text (this is an icon file name)!
 Icon=preferences-system-windows
 NoDisplay=true
 X-GNOME-Autostart-Phase=WindowManager