Fix 3109/3108 typo.

Author: SyntaxColoring

tox.ini

@@ -29,8 +29,8 @@ allowlist_externals =
 # Python 3.10.8 is the most recent version that triggers
 # https://github.com/pytest-dev/pytest-asyncio/issues/757.
 #
-# We need to set basepython explicitly here because if we just added "py3109" to
-# envlist, tox would interpret that as "any py310".
+# We need to set basepython explicitly here because if we just added "py3108" to
+# envlist, tox would interpret that as "py310".
 basepython = python3.10.8
 
 [testenv:docs]