Issue with UTF-8 on windows 10

[rompom]

Os: windows 10
Python: 3.5

Given a markdown document encoded in UTF-8 with "²" characters, when we run the sphinx-build we get the error :
pandoc: Cannot decode byte '\xb2': Data.Text.Internal.Encoding.decodeUtf8: Invalid UTF-8 stream

Solution found :
pandoc_markdown.py modify 2 lignes :
296 : with open(input_dir[1], 'wt',encoding="utf-8") as f:
311: output_string = open(output_dir[1],encoding="utf-8").read()

[sanzoghenzo]

Same here, the proposed solution works for me