Fix url_quote import path

Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>
diff --git a/flask_openid.py b/flask_openid.py
index 9696066..bf13ab6 100644
--- a/flask_openid.py
+++ b/flask_openid.py
@@ -20,7 +20,7 @@
 import sys
 
 from flask import request, session, redirect, current_app, url_for
-from werkzeug import url_quote
+from werkzeug.urls import url_quote
 
 from openid.store.filestore import FileOpenIDStore
 from openid.extensions import ax