[gtk+/gtk-3-22] SpinButton: Fix typo

[Daniel Boles <dboles src gnome org>]

commit 2b509a34d476767710bd3b133e1310340b8db733
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Oct 23 09:20:23 2017 +0100

    SpinButton: Fix typo

 gtk/gtkspinbutton.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index f8cd200..3ffaae3 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -445,7 +445,7 @@ gtk_spin_button_class_init (GtkSpinButtonClass *class)
   /**
    * GtkSpinButton:shadow-type:
    *
-   * Style of bevel around the sping button.
+   * Style of bevel around the spin button.
    *
    * Deprecated: 3.20: Use CSS to determine the style of the border;
    *     the value of this style property is ignored.