Proper syntax.

Author: Julian

tox.ini

@@ -13,7 +13,7 @@ changedir = {envtmpdir}
 passenv = CODECOV* CI
 setenv =
     JSON_SCHEMA_TEST_SUITE = {toxinidir}/json
-    tests: PYTHONWARNINGS = error,ignore:Creating a LegacyVersion:DeprecationWarning,ignore:SelectableGroups dict interface:DeprecationWarning,ignore:":UserWarning,ignore,the imp module:DeprecationWarning
+    tests: PYTHONWARNINGS = error,ignore:Creating a LegacyVersion:DeprecationWarning,ignore:SelectableGroups dict interface:DeprecationWarning,ignore:":UserWarning,ignore:the imp module:DeprecationWarning
 
     coverage,codecov: MAYBE_COVERAGE = coverage run -m
     coverage,codecov: COVERAGE_RCFILE={toxinidir}/.coveragerc