dbt_ls_path: wrong docs and argument should support both Path and str types

[seeholza]

According to the documentation we support str as an argument to dbt_ls_path:

DbtDag(
        render_config=RenderConfig(
            load_method=LoadMode.DBT_MANIFEST, dbt_ls_path="/path/to/dbt_ls_file.txt"
        )
        # ...,
    )

1. There is a typo in the docs: it should be LoadMode.DBT_LS_FILE
2. The code in the doc will not run, since dbt_ls_path is expected to be a Path according to dbt_ls_path: Path | None = None in https://github.com/astronomer/astronomer-cosmos/blob/82e8db97d6a31757fb2da019fc36df52c342eb70/cosmos/config.py#L62C5-L62C36 . This is not consistent with other *_path arguments, which allow str | Path, for example dbt_project_path: InitVar[str | Path | None] = None in the line just above.

I propose to fix 1. and change allow str | Path types for the argument dbt_ls_path

[dosubot]

🤖

Thank you for your interest in contributing to Cosmos! Your proposed fix and improvement to the documentation seem valuable. Encouraging users to contribute to open-source projects like Cosmos helps to improve the overall quality and functionality of the software. Your attention to detail and willingness to contribute are greatly appreciated. I encourage you to go ahead and create a pull request with your proposed changes. Your contribution will be valuable to the community. Keep up the great work!

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