test_loader: Fix black formatting

swh/loader/cvs/tests/test_loader.py

@@ -1379,12 +1379,15 @@ def test_loader_cvs_with_missing_cvs_config_file(swh_storage, datadir, tmp_path)
 def test_loader_cvs_rsync_not_found(swh_storage, mocker):
     origin_url = "rsync://example.org/cvsroot/module"
     loader = CvsLoader(swh_storage, origin_url)
-    mocker.patch.object(
-        loader, "execute_rsync"
-    ).side_effect = subprocess.CalledProcessError(
-        returncode=23,
-        cmd=["rsync", origin_url],
-        stderr='rsync: change_dir "/module" (in cvsroot) failed: No such file or directory (2)',
+    mocker.patch.object(loader, "execute_rsync").side_effect = (
+        subprocess.CalledProcessError(
+            returncode=23,
+            cmd=["rsync", origin_url],
+            stderr=(
+                'rsync: change_dir "/module" (in cvsroot) failed: '
+                "No such file or directory (2)"
+            ),
+        )
     )
     assert loader.load() == {"status": "uneventful"}
     visit_status = (