Fix type of `Linter.cmd`
@@ -573,7 +573,7 @@ class Linter(metaclass=LinterMeta):
# A string, list, tuple or callable that returns a string, list or tuple, containing the
# command line (with arguments) used to lint.
- cmd = '' # type: Union[None, str, List[str], Tuple[str]]
+ cmd = '' # type: Union[None, str, List[str], Tuple[str, ...]]
# A regex pattern used to extract information from the executable's output.
regex = None # type: Union[None, str, Pattern]
