[BUG] Underscores in configuration file don't work whereas dashes do

[ChesterEcwid]

Describe the bug
Hi! Docs contain explicit note about underscores in config file
https://github.com/actions/dependency-review-action?tab=readme-ov-file#option-2-using-an-external-configuration-file

For external configuration files, the option names use underscores instead of dashes. Example: fail_on_severity

I use separate configuration file for dependency-review-action. If I use underscores in it, configuration options are not applied, they're just skipped. I tried to change underscores to dashes, after that options are applied.

To Reproduce
Steps to reproduce the behavior:

1. Use separate config file for workflow action.
2. Set option names with underscores (for example, allow_licenses).
3. Try to run workflow.
4. See in result that licenses listed in allow-licenses options are detected as incompatible.

Expected behavior
I think it's enough to change docs: remove not about underscores and fix example code in this chapter https://github.com/actions/dependency-review-action?tab=readme-ov-file#option-2-using-an-external-configuration-file.

Action version
v4