[pitivi] utils/misc: Fix typos in a new translatable string

[Piotr Drąg <piotrdrag src gnome org>]

commit dfa04ba3c28e67d99785554ffc4b8b23fa7aa772
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jun 4 13:22:47 2016 +0200

    utils/misc: Fix typos in a new translatable string

 pitivi/utils/misc.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/utils/misc.py b/pitivi/utils/misc.py
index 2d77e6b..fd75d8e 100644
--- a/pitivi/utils/misc.py
+++ b/pitivi/utils/misc.py
@@ -277,8 +277,8 @@ def show_user_manual(page=None):
                                    message_type=Gtk.MessageType.ERROR,
                                    buttons=Gtk.ButtonsType.OK,
                                    text=_("Failed to open the user manual."
-                                          " Make sure to have either the `yelp` gnome "
-                                          " documentaion viewer or a web browser"
+                                          " Make sure to have either the `yelp` GNOME "
+                                          " documentation viewer or a web browser"
                                           " installed"))
         dialog.run()
         dialog.destroy()