Clean up tox.ini syntax.

Author: tim-schilling

tox.ini

@@ -43,13 +43,13 @@ whitelist_externals = make
 pip_pre = True
 commands = make coverage TEST_ARGS='{posargs:tests}'
 
-[testenv:py{36,37,38,39,310}-dj{22,31,32,40,main}}-postgresql]
+[testenv:py{36,37,38,39,310}-dj{22,31,32,40,main}-postgresql]
 setenv =
     {[testenv]setenv}
     DB_BACKEND = postgresql
     DB_PORT = {env:DB_PORT:5432}
 
-[testenv:py{36,37,38,39,310}-dj{22,31,32,40,main}}-mysql]
+[testenv:py{36,37,38,39,310}-dj{22,31,32,40,main}-mysql]
 setenv =
     {[testenv]setenv}
     DB_BACKEND = mysql