[gtk+] Fix up a doc comment

[Matthias Clasen <matthiasc src gnome org>]

commit a9f12892eaffe0b2cb5f4f82da121c816e8eb1ba
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 29 23:35:45 2017 -0500

    Fix up a doc comment

 gtk/gtkrender.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkrender.c b/gtk/gtkrender.c
index e898999..5c62287 100644
--- a/gtk/gtkrender.c
+++ b/gtk/gtkrender.c
@@ -854,8 +854,8 @@ gtk_render_activity (GtkStyleContext *context,
  * @context: a #GtkStyleContext
  * @cr: a #cairo_t
  * @texture: a #GdkTexture containing the icon to draw
- * @x: X position for the @pixbuf
- * @y: Y position for the @pixbuf
+ * @x: X position for the @texture
+ * @y: Y position for the @texture 
  *
  * Renders the icon in @texture at the specified @x and @y coordinates.
  *