[gtk+] docs: fix typos in GtkMenuShell

[Sébastien Wilmet <swilmet src gnome org>]

commit 59a9eda5ae9d67806b4a50a4ca0bb558edbc3cfc
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue Nov 1 15:51:21 2016 +0100

    docs: fix typos in GtkMenuShell

 gtk/gtkmenushell.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkmenushell.c b/gtk/gtkmenushell.c
index 4430b4b..5ff12d3 100644
--- a/gtk/gtkmenushell.c
+++ b/gtk/gtkmenushell.c
@@ -46,7 +46,7 @@
  * clicks on one of its menuitems. When a menu is active,
  * passing the mouse over a submenu will pop it up.
  *
- * There is also is a concept of the current menu and a current
+ * There is also a concept of the current menu and a current
  * menu item. The current menu item is the selected menu item
  * that is furthest down in the hierarchy. (Every active menu shell
  * does not necessarily contain a selected menu item, but if
@@ -249,7 +249,7 @@ gtk_menu_shell_class_init (GtkMenuShellClass *klass)
    * @menushell: the object which received the signal
    * @direction: the direction to move
    *
-   * An keybinding signal which moves the current menu item
+   * A keybinding signal which moves the current menu item
    * in the direction specified by @direction.
    */
   menu_shell_signals[MOVE_CURRENT] =