fix invalid format specifier in synchronization message

Using %s instead of %@ caused a crash when formatting the
synchronization message. This commit corrects the Dutch
localization to use the expected %@ placeholder.

Change-Id: Id9f647f67ad47a9c436bbd3ac96c553480809aef

Ring/Ring/Resources/nl-NL.lproj/Localizable.strings

- /*
+ /*
  *  Copyright (C) 2017-2019 Savoir-faire Linux Inc.
  *
  *  Author: Silbino Gonçalves Matado <silbino.gmatado@savoirfairelinux.com>
@@ -67,7 +67,7 @@
 "conversation.sendRequest" = "Send him/her a contact request to be able to exchange together";
 "conversation.sendRequestTitle" = "Send Contact Request";
 "conversation.synchronizationTitle" = "You have accepted the conversation request.";
-"conversation.synchronizationMessage" = "We are waiting for \%s\ connects to synchronize the conversation.";
+"conversation.synchronizationMessage" = "Waiting for %@ to connect to synchronize the conversation…";;
 
 //Invitations
 "invitations.noInvitations" = "Geen uitnodigingen";