[gtk/ebassi/gidocgen] editablelabel: Use markdown for css tree

[Matthias Clasen <matthiasc src gnome org>]

commit 56e0f461758702550bc5c8706631198e12e79f60
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 27 19:46:01 2021 -0500

    editablelabel: Use markdown for css tree

 gtk/gtkeditablelabel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkeditablelabel.c b/gtk/gtkeditablelabel.c
index 860b7f8088..c993350e92 100644
--- a/gtk/gtkeditablelabel.c
+++ b/gtk/gtkeditablelabel.c
@@ -51,12 +51,12 @@
  *
  * # CSS nodes
  *
- * |[<!-- language="plain" -->
+ * ```
  * editablelabel[.editing]
  * ╰── stack
  *     ├── label
  *     ╰── text
- * ]|
+ * ```
  *
  * `GtkEditableLabel` has a main node with the name editablelabel.
  * When the entry is in editing mode, it gets the .editing style