[gtkmm] Box: Fix comments on constructor

[Daniel Boles <dboles src gnome org>]

commit 4dd8aa07dd10903b4dc778a9cf48ac2a5776d9bc
Author: Daniel Boles <dboles src gnome org>
Date:   Wed May 10 15:36:24 2017 +0100

    Box: Fix comments on constructor
    
    • typo in internal comment
    • wrong claim that it always creates a horizontal Box in documentation
      comment – looks like a copy-and-paste error from the HBox/VBox days.

 gtk/src/box.hg |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/src/box.hg b/gtk/src/box.hg
index 7d6373e..ee803c8 100644
--- a/gtk/src/box.hg
+++ b/gtk/src/box.hg
@@ -83,8 +83,8 @@ class Box
   _IGNORE(gtk_box_set_child_packing, gtk_box_query_child_packing)
 public:
 
-  //Note that we try to use the same defaul parameter value as the default property value.
-  /** Creates a new horizontal box.
+  //Note that we try to use the same default parameter value as the default property value.
+  /** Creates a new box.
    * @param orientation The box's orientation.
    * @param spacing Determines the space in pixels between child widgets.
    */