I have recently released 0.20.0 of the spellcheck GitHub action, I can see that you are using 0.16.0, so an update could be useful to you. Let me know if you have any issues with the proposal and I will try to accommodate.
I can recommend [Dependabot](https://github.com/dependabot) for keeping your GitHub actions up to date, if you want a PR proposing a basic configuration, please let me know.
I added the checkboxes that I feel like would be helpful and added a spot for screenshots, I don't want to overcrowd the bug report and I don't feel the need to collect all the possible data I *might* need on first contact