[glade/popover] Fix a typo

[Matthias Clasen <matthiasc src gnome org>]

commit 9a37961de8e8fca34942495b8ea9ea2611e58d71
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 18 13:47:03 2015 -0500

    Fix a typo

 plugins/gtk+/glade-gtk-container.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/gtk+/glade-gtk-container.c b/plugins/gtk+/glade-gtk-container.c
index 0c92e83..fe9f9b8 100644
--- a/plugins/gtk+/glade-gtk-container.c
+++ b/plugins/gtk+/glade-gtk-container.c
@@ -55,7 +55,7 @@ glade_gtk_container_add_verify (GladeWidgetAdaptor *adaptor,
       if (user_feedback)
        glade_util_ui_message (glade_app_get_window (),
                               GLADE_UI_INFO, NULL,
-                              _("Cannot add a toplevel window to a containter."));
+                              _("Cannot add a toplevel window to a container."));
 
       return FALSE;
     }