Update html5lib-tests to latest commit as of 2017-01-13

Commit:
50568b5664d6b034b752310603b2b664d045ad0f

This commit references a PR adding <plaintext> tests
This commit is contained in:
iska
2017-01-13 19:35:09 +01:00
parent 542bc26ff9
commit ea63b38379