colorbutton: Use markdown for css tree

diff --git a/gtk/gtkcolorbutton.c b/gtk/gtkcolorbutton.c
index 8d2c7f06dc9222f7a9c55bb1c439e91eff9a03db..90d322535128dc1657608067e446fbb76e61a821 100644 (file)
--- a/gtk/gtkcolorbutton.c
+++ b/gtk/gtkcolorbutton.c
@@ -58,11 +58,11 @@
  *
  * # CSS nodes
  *
- * |[<!-- language="plain" -->
+ * ```
  * colorbutton
  * ╰── button.color
  *     ╰── [content]
- *]|
+ * ```
  *
  * `GtkColorButton` has a single CSS node with name colorbutton which
  * contains a button node. To differentiate it from a plain `GtkButton`,