[gtk+/wip/baedert/drawing] spinbutton: Fix css node docs

[Timm Bäder <baedert src gnome org>]

commit c4200797d1eae42073fb422bddfc994c0dc3e699
Author: Timm Bäder <mail baedert org>
Date:   Sun Jul 16 15:46:09 2017 +0200

    spinbutton: Fix css node docs

 gtk/gtkspinbutton.c |   24 ++++++++++++------------
 1 files changed, 12 insertions(+), 12 deletions(-)
---
diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index 464ca93..8952465 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -86,22 +86,22 @@
  *
  * |[<!-- language="plain" -->
  * spinbutton.horizontal
- * ├── undershoot.left
- * ├── undershoot.right
- * ├── entry
- * │   ╰── ...
- * ├── button.down
- * ╰── button.up
+ * ╰── box.horizontal
+ *     ├── entry
+ *     │    ├── undershoot.left
+ *     │    ╰── undershoot.right
+ *     ├── button.down
+ *     ╰── button.up
  * ]|
  *
  * |[<!-- language="plain" -->
  * spinbutton.vertical
- * ├── undershoot.left
- * ├── undershoot.right
- * ├── button.up
- * ├── entry
- * │   ╰── ...
- * ╰── button.down
+ * ╰── box.vertical
+ *     ├── button.up
+ *     ├── entry
+ *     │    ├── undershoot.left
+ *     │    ╰── undershoot.right
+ *     ╰── button.up
  * ]|
  *
  * GtkSpinButtons main CSS node has the name spinbutton. It creates subnodes