Warnings is not allowed in "GL06" check

[MatthewFlamm]

Warnings is not included in the allowed sections when checking GL06.

numpydoc/numpydoc/validate.py

Lines 21 to 34 in 6d7eaf7

	ALLOWED_SECTIONS = [
	"Parameters",
	"Attributes",
	"Methods",
	"Returns",
	"Yields",
	"Other Parameters",
	"Raises",
	"Warns",
	"See Also",
	"Notes",
	"References",
	"Examples",
	]