test_docs: Fix use of fixture when testing /team data.

This fixes a bug in how 449f7e2d4b
managed its fixture file.

zerver/tests/test_docs.py

@@ -329,6 +329,7 @@ class IntegrationTest(TestCase):
 
 class AboutPageTest(ZulipTestCase):
     def test_endpoint(self) -> None:
+        with self.settings(CONTRIBUTOR_DATA_FILE_PATH="zerver/tests/fixtures/authors.json"):
             result = self.client_get('/team/')
         self.assert_in_success_response(['Our amazing community'], result)
         self.assert_in_success_response(['2017-11-20'], result)