chore: add know issues to the README

README.md

@@ -41,3 +41,9 @@ jobs:
           repo: ${{ github.event.repository.name }}
           days_old: ${{ github.event.inputs.days_old }}
 ```
+
+### Known issues
+
+1. The routine only deletes 100 workflows per run. There's an ongoing work to address [this issue](https://github.com/igorjs/gh-actions-clean-workflow/issues/22).
+
+2. The parameter `days_old` isn't working as expected on the [v1](https://github.com/igorjs/gh-actions-clean-workflow/releases/tag/v1). This issue has been addressed on issue [#34](https://github.com/igorjs/gh-actions-clean-workflow/issues/34)