Updated model names for OctoAI

[varunfb]

What does this PR do?

Updated the name of the models offered by OctoAI.

Feature/Issue validation/testing

Validated by getting the list of models from OctoAI site.

• Test A
  Logs for Test A

• Test B
  Logs for Test B

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? Please add a link
  to it if that's the case.
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

Thanks for contributing 🎉!

[albertodepaola]

Aligned names in the provider catalog