[gtk+] scrollbar: Correct css docs

[Matthias Clasen <matthiasc src gnome org>]

commit f2a7e1219b7e56b3552dfe27fddb8367694e969c
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Oct 7 19:10:10 2017 -0400

    scrollbar: Correct css docs
    
    The .fine-tune class appears on the range node.

 gtk/gtkscrollbar.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkscrollbar.c b/gtk/gtkscrollbar.c
index 34d0d4c..6f7c1a9 100644
--- a/gtk/gtkscrollbar.c
+++ b/gtk/gtkscrollbar.c
@@ -58,9 +58,9 @@
  * # CSS nodes
  *
  * |[<!-- language="plain" -->
- * scrollbar[.fine-tune]
+ * scrollbar
  * ╰── box
- *     ╰── range
+ *     ╰── range[.fine-tune]
  *         ╰── trough
  *             ╰── slider
  * ]|
@@ -69,7 +69,7 @@
  * contents. Both the main node and the box subnode get the .horizontal or .vertical
  * style classes applied, depending on the scrollbar's orientation.
  *
- * The main node gets the style class .fine-tune added when the scrollbar is
+ * The range node gets the style class .fine-tune added when the scrollbar is
  * in 'fine-tuning' mode.
  *
  * If steppers are enabled, they are represented by up to four additional