[gtk] constraint: Fix property name typo in doc

[Mohammed Sadiq <pksadiq src gnome org>]

commit a8c23d06ac6074835042d0ab33b2fef9c363b31f
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Wed Jul 3 09:31:39 2019 +0530

    constraint: Fix property name typo in doc

 gtk/gtkconstraint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkconstraint.c b/gtk/gtkconstraint.c
index 4ddaa5ac1b..37b4e449ae 100644
--- a/gtk/gtkconstraint.c
+++ b/gtk/gtkconstraint.c
@@ -256,7 +256,7 @@ gtk_constraint_class_init (GtkConstraintClass *klass)
    * GtkConstraint:multiplier:
    *
    * The multiplication factor to be applied to the
-   * #GtkConstraint:source-attribue.
+   * #GtkConstraint:source-attribute.
    */
   obj_props[PROP_MULTIPLIER] =
     g_param_spec_double ("multiplier",