[gnome-todo] theme-selector: Improve tooltip string

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

commit 1e6fd42f2e6b0477b18b9003fecc194414abc948
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 8 13:00:31 2021 -0300

    theme-selector: Improve tooltip string

 src/gui/gtd-theme-selector.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gui/gtd-theme-selector.ui b/src/gui/gtd-theme-selector.ui
index ef10457c..ffa3ca17 100644
--- a/src/gui/gtd-theme-selector.ui
+++ b/src/gui/gtd-theme-selector.ui
@@ -19,7 +19,7 @@
             <property name="focus-on-click">false</property>
             <property name="action-name">settings.style-variant</property>
             <property name="action-target">'system'</property>
-            <property name="tooltip-text" translatable="yes">System</property>
+            <property name="tooltip-text" translatable="yes">Use system style</property>
             <child>
               <object class="GtkImage">
                 <property name="halign">center</property>