ci: do not run py36-docs with py36 on Travis, but checkqa

Author: blueyed

.travis.yml

@@ -11,7 +11,7 @@ matrix:
       dist: trusty
       sudo: false
     - python: 3.6
-      env: CI_TARGET=checkqa TOXENV=checkqa
+      env: CI_TARGET=checkqa TOXENV=checkqa,docs
 python:
   # If the build matrix gets bigger, also update the number of runs
   # at the bottom of .scrutinizer.yml.

tox.ini

@@ -1,7 +1,6 @@
 [tox]
 envlist =
   py{27,34,35,36,37,38}-{asyncio,pyuv}-cov,pypy-cov
-  py36-docs
   checkqa
 
 [testenv]