[gnome-todo] ui: Rename the internal child of GtdPluginDialog

[Emmanuele Bassi <ebassi src gnome org>]

commit 9a32c25d60857b77b3e1f7b88d2229fcc71a17c0
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Jan 27 15:13:43 2019 +0000

    ui: Rename the internal child of GtdPluginDialog
    
    It's not a generic "vbox" any more, but it's called "content_area", to
    match the accessor function.

 src/gtd-plugin-dialog.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gtd-plugin-dialog.ui b/src/gtd-plugin-dialog.ui
index 48a4f72..6e7cfbf 100644
--- a/src/gtd-plugin-dialog.ui
+++ b/src/gtd-plugin-dialog.ui
@@ -9,7 +9,7 @@
     <property name="width_request">600</property>
     <property name="height_request">450</property>
     <property name="hide-on-close">True</property>
-    <child internal-child="vbox">
+    <child internal-child="content_area">
       <object class="GtkBox" id="dialog-vbox1">
         <property name="can_focus">False</property>
         <property name="orientation">vertical</property>