[gnome-todo] sidebar: Fix wrong string

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8acae0b1d21f85bec174b9d751888b9bc840d08b
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Sep 18 19:21:17 2019 -0300

    sidebar: Fix wrong string
    
    And add a comment for translators.

 src/sidebar/gtd-sidebar.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/sidebar/gtd-sidebar.ui b/src/sidebar/gtd-sidebar.ui
index 1541ba9..398dc3c 100644
--- a/src/sidebar/gtd-sidebar.ui
+++ b/src/sidebar/gtd-sidebar.ui
@@ -48,7 +48,7 @@
                               <object class="GtkLabel">
                                 <property name="hexpand">1</property>
                                 <property name="xalign">0</property>
-                                <property name="label" translatable="yes">Archive</property>
+                                <property name="label" translatable="yes" comments="Translators: 'archived' 
as in 'archived task lists'">Archived</property>
                               </object>
                             </child>
                             <child>