flake8-docstrings: List of missing arguments not displayed in D417 Missing argument description error

When I get D417 errors the list of missing argument is not displayed in the error message. It would be much more convenient to have the list of missing argument displayed in the error message.

Looking at the code this list get generated here but does not end up being displayed in the final error message.

example:

def f(a: str, b: str) -> None:
    """
    Simple function

    Arguments:
    ---------
    a: some argument
    """
    print(a+b)

yields

D417 Missing argument descriptions in the docstring

while I would like to get

D417 Missing argument descriptions in the docstring for argument b