[gdk-pixbuf/ebassi/gi-docgen: 5/11] docs: Fix the deprecation annotation for AlphaMode

[Emmanuele Bassi <ebassi src gnome org>]

commit 6dcfdc8592b893d954eae1c10dc1cc2810116a4f
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sat Mar 20 19:04:56 2021 +0000

    docs: Fix the deprecation annotation for AlphaMode
    
    The syntax is "Deprecated: version: message".

 gdk-pixbuf/gdk-pixbuf-core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk-pixbuf/gdk-pixbuf-core.h b/gdk-pixbuf/gdk-pixbuf-core.h
index 9e6ba6fab..e03357d71 100644
--- a/gdk-pixbuf/gdk-pixbuf-core.h
+++ b/gdk-pixbuf/gdk-pixbuf-core.h
@@ -54,7 +54,7 @@ G_BEGIN_DECLS
  * compositing onto arbitrary drawables.  For now both cases fall
  * back to a bilevel clipping mask.
  *
- * Deprecated: it is unused since 2.42.
+ * Deprecated: 2.42: There is no user of GdkPixbufAlphaMode
  */
 typedef enum
 {