expander: Update css docs

diff --git a/gtk/gtkexpander.c b/gtk/gtkexpander.c
index 3b71c92d10dea87009b605461c92d88b0d0cda34..85e2b67e1f1f6d7a6130021ef1c3d6b5b6860c2a 100644 (file)
--- a/gtk/gtkexpander.c
+++ b/gtk/gtkexpander.c
@@ -96,10 +96,11 @@
  *
  * |[<!-- language="plain" -->
  * expander
- * ├── title
- * │   ├── arrow
- * │   ╰── <label widget>
- * ╰── <child>
+ * ╰── box
+ *     ├── title
+ *     │   ├── arrow
+ *     │   ╰── <label widget>
+ *     ╰── <child>
  * ]|
  *
  * GtkExpander has three CSS nodes, the main node with the name expander,