correct the assert value

Author: charlesdong1991

scripts/tests/test_validate_docstrings.py

@@ -981,4 +981,4 @@ def test_exit_status_for_deprecated_function(self, monkeypatch):
                                                errors=[],
                                                output_format='default',
                                                ignore_deprecated=True)
-        assert exit_status == 1
+        assert exit_status == 5