`@option` processing help argument despite docstring saying that it forwards arguments unchanged

[janluke]

click/src/click/decorators.py

Lines 244 to 245 in 8b48450

	if "help" in option_attrs:
	option_attrs["help"] = inspect.cleandoc(option_attrs["help"])

This code should be moved into Option or the docstring should be updated.

[davidism]

I'm going to extend this to @command, with help, epilog, and short_help.