[gtk] popover: Fix a typo

[Matthias Clasen <matthiasc src gnome org>]

commit 9d2ca90b4cfc7522121f6581dc8ed9655cf3a4e4
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 25 13:59:16 2020 -0500

    popover: Fix a typo
    
    s/Wether/Whether/
    
    Fixes #3393

 gtk/gtkpopover.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 0e77c612ad..504dcd6cc1 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -1673,7 +1673,7 @@ gtk_popover_class_init (GtkPopoverClass *klass)
   properties[PROP_CASCADE_POPDOWN] =
       g_param_spec_boolean ("cascade-popdown",
                             P_("Cascade popdown"),
-                            P_("Wether the popover pops down after a child popover"),
+                            P_("Whether the popover pops down after a child popover"),
                             FALSE,
                             GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);