Fix #9169: test_main_with_args in tools/lint has wrong expectation

This got broken by 19c7918

tools/lint/tests/test_lint.py

@@ -390,7 +390,10 @@ def test_main_with_args():
         sys.argv = ['./lint', 'a', 'b', 'c']
         with _mock_lint('lint', return_value=True) as m:
             lint_mod.main(**vars(create_parser().parse_args()))
-            m.assert_called_once_with(repo_root, ['a', 'b', 'c'], "normal")
+            m.assert_called_once_with(repo_root,
+                                      [os.path.relpath(os.path.join(os.getcwd(), x), repo_root)
+                                       for x in ['a', 'b', 'c']],
+                                      "normal")
     finally:
         sys.argv = orig_argv