[3.7] bpo-6135: Fix subprocess.check_output doc to mention changes in 3.6 (GH-5564) by miss-islington · Pull Request #5572 · python/cpython

@brice-gros @miss-islington

…ythonGH-5564)

Fixes the documentation for `subprocess.check_output()` not mentioning that the encoding and errors parameters were added in 3.6.
(cherry picked from commit fc1ce81)

Co-authored-by: Brice Gros <brice-gros@users.noreply.github.com>