Add parameter --config_overrides for run_mlm_wwm.py

[conan1024hao]

WHY

• I noticed that the parameter --config_overrides is only available in run_clm.py, run_plm.py and run_mlm.py in examples/pytorch/language-modeling, but not available in run_mlm_wwm.py in examples/research_projects/mlm_wwm/run_mlm_wwm.py.
• However, I want to train a wwm model from scratch too, so we need this parameter.

WHAT

• Added the parameter --config_overrides in run_mlm_wwm.py.

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[conan1024hao]

@sgugger @wlhgtc @LowinLi Please review this PR if you have time thank you.

[sgugger]

Thanks for your PR. Note that we don't maintain research projects, they are pinned to work with a specific version of Transformers. You will need approval from the original author of the script to have this merged :-)

[conan1024hao]

@sgugger Thank you for reply. However I can not find the earliest history of run_mlm_wwm.py... Is @wlhgtc the original author?

[wlhgtc]

@conan1024hao LGTM
And @sgugger can you help merge this PR ?

[sgugger]

Sure thing!