Fix passed parameter in test

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/tests/test_remote.py

@@ -185,7 +185,7 @@ class MultiRepoTest(ViewTestCase):
             language_code='cs'
         )
         unit = translation.unit_set.get(source='Hello, world!\n')
-        unit.translate(self.request, 'Ahoj svete!\n', False)
+        unit.translate(self.request, ['Ahoj svete!\n'], False)
 
         self.assertFalse(translation.do_update(self.request))