[gnome-system-monitor] Use a proper translator comment in interface.ui

[Piotr Drąg <piotrdrag src gnome org>]

commit 92a0a86d497eb41683afd93af73d46f2f043caa5
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Jul 22 22:56:51 2013 +0200

    Use a proper translator comment in interface.ui
    
    Also fix grammar a bit.

 data/interface.ui |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/data/interface.ui b/data/interface.ui
index 9924ca3..1b2f191 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -716,8 +716,7 @@
         <attribute name="accel">&lt;Primary&gt;m</attribute>
       </item>
       <item>
-        <!-- Translators: this means 'Files that are open' (open is no verb here) -->
-        <attribute name="label" translatable="yes">Open _Files</attribute>
+        <attribute name="label" translatable="yes" comments="Translators: this means 'Files that are open' 
(open is not a verb here)">Open _Files</attribute>
         <attribute name="action">win.open-files</attribute>
         <attribute name="accel">&lt;Primary&gt;f</attribute>
       </item>