[amtk] docs: update path to interactive test

[Sébastien Wilmet <swilmet src gnome org>]

commit 586ecb659ed08611ee08795fe0148bfeb73acffd
Author: Sébastien Wilmet <sebastien wilmet gmail com>
Date:   Fri Sep 10 01:22:06 2021 +0200

    docs: update path to interactive test

 amtk/amtk-factory.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/amtk/amtk-factory.c b/amtk/amtk-factory.c
index 1d4906f..cd1c711 100644
--- a/amtk/amtk-factory.c
+++ b/amtk/amtk-factory.c
@@ -180,8 +180,8 @@
  *
  * # Modern UI with a GtkHeaderBar
  *
- * To have an example code, see `tests/test-headerbar.c` in the git repository
- * of Amtk.
+ * To have an example code, see `tests/interactive-tests/test-headerbar.c` in
+ * the git repository of Amtk.
  */
 
 struct _AmtkFactoryPrivate