[tepl] AbstractFactory docs: add note about GtkTextView::create_buffer

[Sébastien Wilmet <swilmet src gnome org>]

commit 8ae39ac4e990deb065c343b7a04e5c7112481a5f
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Jul 29 20:04:20 2017 +0200

    AbstractFactory docs: add note about GtkTextView::create_buffer

 tepl/tepl-abstract-factory.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/tepl/tepl-abstract-factory.c b/tepl/tepl-abstract-factory.c
index 7000bd8..bcf2991 100644
--- a/tepl/tepl-abstract-factory.c
+++ b/tepl/tepl-abstract-factory.c
@@ -30,6 +30,11 @@
  * override the desired virtual functions) and setting the instance with
  * tepl_abstract_factory_set_singleton(), an application can tell Tepl to create
  * custom objects and widgets.
+ *
+ * Note that #GtkTextViewClass has the ::create_buffer factory method, that
+ * #TeplView overrides to create a #TeplBuffer. How the #TeplView and
+ * #TeplBuffer are created can be customized with the ::create_tab vfunc of
+ * #TeplAbstractFactory.
  */
 
 /* API design: