Marian docstring

[traveler-pinkie]

What does this PR do?

related to #16292

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you read the contributor guideline,
  Pull Request section?
• Was this discussed/approved via a Github issue or the forum? Please add a link
  to it if that's the case.
• Did you make sure to update the documentation with your changes? Here are the
  documentation guidelines, and
  here are tips on formatting docstrings.
• Did you write any new necessary tests?

Who can review?

@ydshieh, @patrickvonplaten
Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

[traveler-pinkie]

I need some help. This is my first time contributing to a project ever. I'm getting familiar with the process of git, and I've tried to follow the instructions layed out on the [Community Event] Doc Tests Sprint #16292. I ran the doc test locally and received to errors. But upon further inspection, I can't seem to find what the issue is. Please if you can offer come guidance on what I'm doing wrong and how to progress. I'm working on modeling_tf_marian.py

[traveler-pinkie]

[ydshieh]

@traveler-pinkie sorry for being late here. Are you still interested in working on Marian config files?

[traveler-pinkie]

@ydshieh . Thanks for commenting back. But I think at the moment I should probably study a little bit more. It looks like I was having more difficulty then I should have. With my skills currently. I think it's best if someone else works on it. Sorry and thank you