[gtk/4.0-backports: 22/53] docs: Use the appropriate syntax for code block language

[Matthias Clasen <matthiasc src gnome org>]

commit 4e6d62f745ae64d10f36db751e78df40af09b840
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Jan 28 14:53:39 2021 +0000

    docs: Use the appropriate syntax for code block language

 gtk/gtkpopovermenu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkpopovermenu.c b/gtk/gtkpopovermenu.c
index 30b0dd4c53..f5d14f9b6e 100644
--- a/gtk/gtkpopovermenu.c
+++ b/gtk/gtkpopovermenu.c
@@ -63,7 +63,7 @@
  * `<link name="section">`, you can use `<submenu>` or `<section>`
  * elements.
  *
- * |[<!--language: xml -->
+ * |[<!-- language="xml" -->
  * <menu id='app-menu'>
  *   <section>
  *     <item>