[🐛 Bug]: Copy-pasted docstring parameter in _handle_stateless_alerts (keep-provider)

[simpleqt]

Describe the bug

In keep/providers/keep_provider/keep_provider.py, the docstring of _handle_stateless_alerts documents the parameter copied from another method, so the parameter name in the docstring does not match the actual signature.

To Reproduce

1. Open keep_provider.py and read _handle_stateless_alerts's docstring.
2. The documented parameter does not match the function's argument.

Expected behavior
Docstring parameter should match the real signature.

PR fixing this: #6826