codeowners_path parameter does not work

[BaptisteSavesMatera]

The readme indicates

If codeowners_path is set in code_ownership.yml codeowners will use that path to generate the CODEOWNERS file. For example, 
codeowners_path: docs will generate docs/CODEOWNERS.

But adding codeowners_path: docs still generates the CODEOWNERS file in .github folder.

I tried multiple syntaxes of that, and to check the code, the option does not seem to exist anymore ?