[gtk+] Fix up the documentation of GtkTextView::move-viewport

[Matthias Clasen <matthiasc src gnome org>]

commit 3756a1eca291ab638d2b5c0da9e0c8284431c7c1
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 8 10:26:22 2016 -0400

    Fix up the documentation of GtkTextView::move-viewport
    
    Pointed out in https://bugzilla.gnome.org/show_bug.cgi?id=768546

 gtk/gtktextview.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 22b3a59..bcb0f0d 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -1125,11 +1125,11 @@ G_GNUC_END_IGNORE_DEPRECATIONS
   /**
    * GtkTextView::move-viewport:
    * @text_view: the object which received the signal
-   * @step: the granularity of the move, as a #GtkMovementStep
+   * @step: the granularity of the movement, as a #GtkScrollStep
    * @count: the number of @step units to move
    *
-   * The ::move-viewport signal is a 
-   * [keybinding signal][GtkBindingSignal] 
+   * The ::move-viewport signal is a
+   * [keybinding signal][GtkBindingSignal]
    * which can be bound to key combinations to allow the user
    * to move the viewport, i.e. change what part of the text view
    * is visible in a containing scrolled window.