Fix some documentation in ./src/diffusers/models/adapter.py

[ahnjj]

What does this PR do?

Fixes #9567

Fixes # (issue)

• Unified two expressions with the same meaning into one. (arguments / parameters -> args)
• More consistent with Python docstring conventions.
  • Optional, None and Defaults Formatting
• Concise Summary and argument descriptions
• Corrected Grammar

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?
• Did you read our philosophy doc (important for complex PRs)?
• 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?

This PR tries to attempt a solution at one of the submodules listed in #9567 so I think @a-r-r-o-w is the best to review it. Alongside the same, @charchit7 @yijun-lee and @SubhasmitaSw were also working on the same, so just a ping for the update on the same.