[gtk+] stylecontext: fix gtk-doc comment syntax

[Cosimo Cecchi <cosimoc src gnome org>]

commit a5a50915554f6a595bd2769f5cd5e8602a2b703b
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Dec 22 11:56:23 2015 -0800

    stylecontext: fix gtk-doc comment syntax

 gtk/gtkstylecontext.h |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkstylecontext.h b/gtk/gtkstylecontext.h
index d138a76..8428213 100644
--- a/gtk/gtkstylecontext.h
+++ b/gtk/gtkstylecontext.h
@@ -895,7 +895,7 @@ struct _GtkStyleContextClass
  */
 #define GTK_STYLE_CLASS_READ_ONLY "read-only"
 
-/*
+/**
  * GTK_STYLE_CLASS_OVERSHOOT:
  * A CSS class that is added on the visual hints that happen
  * when scrolling is attempted past the limits of a scrollable
@@ -905,7 +905,7 @@ struct _GtkStyleContextClass
  */
 #define GTK_STYLE_CLASS_OVERSHOOT "overshoot"
 
-/*
+/**
  * GTK_STYLE_CLASS_UNDERSHOOT:
  * A CSS class that is added on the visual hints that happen
  * where content is 'scrolled off' and can be made visible
@@ -915,7 +915,7 @@ struct _GtkStyleContextClass
  */
 #define GTK_STYLE_CLASS_UNDERSHOOT "undershoot"
 
-/*
+/**
  * GTK_STYLE_CLASS_PAPER:
  * A CSS class that is added to areas that should look like paper.
  *