The type of `arguments` parameter of PySide6.QtCore.Signal in help(Signal) and PySide6 docs differs

The docs on QtCore.Signal read the following signature:

class PySide6.QtCore.Signal([type1 [, type2...]] [, name="" [, arguments=[]]])

( sources/pyside6/doc/extras/QtCore.Signal.rst )

The arguments parameter is a list, and this is explicitly mentioned twice.

However, help(QtCore.Signal) states the following:

_init_(self, *types: type, name: Optional[str] = None, arguments: Optional[str] = None) -> None

Please notice the type of the arguments parameter. Here, it's just a string, a single one.