workdir is not a valid input parameters

[marcindabrowski]

When I defined workdir as an input paramter to this action I got error:
Unexpected input(s) 'workdir', valid inputs are ['entryPoint', 'args', 'github_token', 'tool_name', 'level', 'reporter', 'filter_mode', 'fail_on_error', 'reviewdog_flags', 'actionlint_flags'].

Also searched the main branch code, and workdir is also only in README.md file.
As I understood actionlint tool it is always run against .github/workflows folder.