Fix failing test for router with no trailing slash

rest_framework/tests/test_routers.py

@@ -146,7 +146,7 @@ class TestTrailingSlashRemoved(TestCase):
         self.urls = self.router.urls
 
     def test_urls_can_have_trailing_slash_removed(self):
-        expected = ['^notes$', '^notes/(?P<pk>[^/]+)$']
+        expected = ['^notes$', '^notes/(?P<pk>[^/.]+)$']
         for idx in range(len(expected)):
             self.assertEqual(expected[idx], self.urls[idx].regex.pattern)