[gtk/docs-gtk-org: 1/2] Docs: small fix in the GObject Tutorial

[Emmanuele Bassi <ebassi src gnome org>]

commit 1a344113ae2968c6d63d0e875595d5876625f59b
Author: Lorenz Wildberg <lorenz wild-fisch de>
Date:   Fri Dec 31 15:02:02 2021 +0000

    Docs: small fix in the GObject Tutorial

 glib/gobject/tutorial.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/glib/gobject/tutorial.md b/glib/gobject/tutorial.md
index 254b9872df..c35719727f 100644
--- a/glib/gobject/tutorial.md
+++ b/glib/gobject/tutorial.md
@@ -405,7 +405,9 @@ memories.)
 - non-virtual public methods,
 - virtual public methods and
 - virtual private methods
-- non-virtual public methods
+- non-virtual private methods
+
+#### Non-Virtual Methods
 
 These are the simplest, providing a simple method which acts on the object.
 Provide a function prototype in the header and an implementation of that