DOC: Fix and extend ParserError docstring

[cancan101]

ParserError says:

Exception that is raised by an error encountered in pd.read_csv

however, it seems to be raised at least by html parsing, and perhaps other parsers as well:

pandas/pandas/tests/io/test_html.py

Lines 820 to 829 in 486e626

	def test_computer_sales_page(self, datapath):
	data = datapath('io', 'data', 'computer_sales_page.html')
	with tm.assert_raises_regex(ParserError,
	r"Passed header=\[0,1\] are "
	r"too many rows for this "
	r"multi_index of columns"):
	self.read_html(data, header=[0, 1])
	data = datapath('io', 'data', 'computer_sales_page.html')
	assert self.read_html(data, header=[1, 2])

As higher level point, it would be great if the list of potential runtime exceptions raised by the the various parsers were documented in the docs.

[WillAyd]

Thanks for this - PRs to update documentation are certainly welcome!

[RjLi13]

Hey, can I contribute to help fix this issue if no one else has yet?

[thoo]

@RjLi13 Look like nobody is working on it. Go for it.