transformers

1f1cc09d - [DOCTEST] Config doctest for `MCTCT`, `MBart` and `LayoutLM` (#19889)

[DOCTEST] Config doctest for `MCTCT`, `MBart` and `LayoutLM` (#19889) * Update documentation_tests.txt * Update configuration_mbart.py * Update configuration_mctct.py * Update configuration_layoutlm.py * Update configuration_layoutlmv2.py * Update configuration_layoutlmv3.py * Update documentation_tests.txt