Fix wrong doc-strings in several handlers

[Nic-Ma]

Description

Thanks for the feedback from internal team, this PR fixed outdated doc-strings in several handlers, especially the wrong item engine.state.log.

Status

Ready

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[Nic-Ma]

/black

[wyli]

/build

[wyli]

Thanks, it looks good to me.