Update tox.ini

Remove useless `}`

Author: wd

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = {py27,py35}-django{111}}-{end2end,unittests},
+envlist = {py27,py35}-django{111}-{end2end,unittests},
           {py35,py36,py37,py38}-django{210,220}-{end2end,unittests},py37-lint
 
 [testenv]
@@ -38,4 +38,4 @@ ignore = E501,W503
 multi_line_output=3
 line_length=88
 force_grid_wrap=0
-include_trailing_comma=True
+include_trailing_comma=True