[gnome-contacts] Forgot to rename an action string

[Niels De Graef <nielsdg src gnome org>]

commit 966e380aad1ffe722c435ec2500b4a37cf988456
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Mon Jun 19 17:36:59 2017 +0200

    Forgot to rename an action string

 src/contacts-window.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/contacts-window.vala b/src/contacts-window.vala
index 1cb0071..085da1a 100644
--- a/src/contacts-window.vala
+++ b/src/contacts-window.vala
@@ -143,7 +143,7 @@ public class Contacts.Window : Gtk.ApplicationWindow {
       view_switcher.visible_child_name = "content-view";
       set_titlebar (content_header_bar);
     } else {
-      var change_book_action = app.lookup_action ("change_book") as GLib.SimpleAction;
+      var change_book_action = app.lookup_action ("change-book") as GLib.SimpleAction;
       if (change_book_action != null) {
        change_book_action.set_enabled (false);
       }