Merge branch 'fix-formatter-with-python3.8' of git://github.com/leplatrem/python-dockerflow into fix-formatter-with-python3.8

Author: jezdez

tox.ini

@@ -3,7 +3,7 @@ usedevelop = True
 minversion = 1.8
 envlist =
     py38-lint,
-    py36-docs,
+    py38-docs,
     # the version matrix according to the Django docs:
     # https://docs.djangoproject.com/en/2.0/faq/install/#what-python-version-can-i-use-with-django
     py{27,36}-dj111-tests,
@@ -42,8 +42,8 @@ commands =
     fl{011,012,10}-tests: pytest tests/core/ tests/flask/ {posargs:}
     s19: pytest tests/core/ tests/sanic/
 
-[testenv:py36-docs]
-basepython = python3.6
+[testenv:py38-docs]
+basepython = python3.8
 deps =
     -rtests/requirements/default.txt
     -rtests/requirements/docs.txt