MT#56181 Fix link of AutoAttendant edit slots

From the very origin of the AA module the link used in panel
to create/edit the AA slots were '/preferences/speeddial/edit'.
This is wrong and most probably coming from a copy and paste of
the speeddial feature.

The commit fix the link and it is now chaged to the following
'/preferences/autoattendant/edit'.

Change-Id: I095b433cad78fb0175b0551fcfdea85815f73cdf
(cherry picked from commit 28340ce871)

lib/NGCP/Panel/Controller/Subscriber.pm

@@ -5123,7 +5123,7 @@ sub delete_autoattendant :Chained('autoattendant') :PathPart('delete') :Args(0)
         $c->uri_for_action('/subscriber/preferences', [$c->req->captures->[0]]));
 }
 
-sub edit_autoattendant :Chained('base') :PathPart('preferences/speeddial/edit') :Args(0) {
+sub edit_autoattendant :Chained('base') :PathPart('preferences/autoattendant/edit') :Args(0) {
     my ($self, $c) = @_;
 
     $c->detach('/denied_page')