docs: Fix broken link to options in readme

Author: pawamoy

README.md

@@ -49,7 +49,7 @@ If you configure it in `pyproject.toml`, the configuration should go under the `
 docstring_style = "sphinx"
 ```
 
-See [the documentation](https://mkdocstrings.github.io/griffe2md/reference/griffe2md/config/#griffe2md.config.ConfigDict) for reference.
+See [the documentation](https://mkdocstrings.github.io/griffe2md/reference/api/#griffe2md.ConfigDict) for reference.
 
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