[bugfix] fix TestPageBotMayEdit tests

Bug: T282312
Change-Id: I0351f0795f261665d7bd8f9e63d8bdb46ae56169
---
M tests/page_tests.py
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/page_tests.py b/tests/page_tests.py
index eb9e7be..87c75b2 100644
--- a/tests/page_tests.py
+++ b/tests/page_tests.py
@@ -766,7 +766,7 @@
     def _run_test(self, template, user, expected_result):
         """Run a single template test."""
         del self.page.text
-        self.page._text = template.format(user=user)
+        self.page._text = template % {'user': user}
         with self.subTest(template=template, user=user):
             self.assertEqual(self.page.botMayEdit(), expected_result)
         self.page.botMayEdit.cache_clear()

