Validating Enum doc-strings?

Not sure if it is just me, but I get the following warning when validating an Enum:

WARNING: [numpydoc] Validation warnings while processing docstring for 'b_asic.quantization.Quantization.ROUNDING':
  GL01: Docstring text (summary) should start in the line immediately after the opening quotes (not in the same line, or leaving a blank line in between)
  GL02: Closing quotes should be placed in the line after the last text in the docstring (do not close the quotes in the same line as the text, or leave a blank line between the last text and the quotes)

The code looks like:

class Quantization(Enum):
    """Quantization types."""

    ROUNDING = 1
    """
    Standard two's complement rounding, i.e, tie rounds towards infinity.
    """

Is there a more correct way to document enums or is this just something that is not completely covered in the validation?

Edit: I should mention that I have tried several different ways to format the doc-string as well.

Start with the numpydoc validation warnings for b_asic.quantization.Quantization.ROUNDING and compare the shown Enum member docstring with the validation rules. Check whether Enum member docstrings are supported and whether the warning is expected; done means the supported formatting or required validation behavior is clearly established.