[gtk+/gtk-3-22] Frame: Fix another piece of .flat documentation

[Daniel Boles <dboles src gnome org>]

commit 629c931f1f16c7632c583bc79f91f234e4aac853
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Mar 6 07:19:30 2017 +0000

    Frame: Fix another piece of .flat documentation

 gtk/gtkframe.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkframe.c b/gtk/gtkframe.c
index f5d92de..af7d3cf 100644
--- a/gtk/gtkframe.c
+++ b/gtk/gtkframe.c
@@ -669,7 +669,7 @@ gtk_frame_get_label_align (GtkFrame *frame,
  * Sets the #GtkFrame:shadow-type for @frame, i.e. whether it is drawn without
  * (GTK_SHADOW_NONE) or with (other values) a visible border. Values other than
  * GTK_SHADOW_NONE are treated identically by #GtkFrame. The chosen type is
- * applied by removing or adding the .flat class to the main CSS node, frame.
+ * applied by removing or adding the .flat class to the CSS node named border.
  **/
 void
 gtk_frame_set_shadow_type (GtkFrame      *frame,