Update pytest warningfilter

Author: domdfcoding

tox.ini

@@ -226,7 +226,7 @@ filterwarnings =
     always:'cgi' is deprecated and slated for removal in Python 3.13:DeprecationWarning
     always:'imghdr' is deprecated and slated for removal in Python 3.13:DeprecationWarning:sphinx.util.images
     always:The `docutils.parsers.rst.directive.html` module will be removed in Docutils 1.2:DeprecationWarning
-    always:pkg_resources is deprecated as an API:DeprecationWarning
+    always:pkg_resources is deprecated as an API
     always:Deprecated call to `pkg_resources.declare_namespace:DeprecationWarning
     always:datetime.utcfromtimestamp\(\) is deprecated and scheduled for removal in a future version:DeprecationWarning:sphinx.builders[.*]
     always:datetime.datetime.utcfromtimestamp\(\) is deprecated and scheduled for removal in a future version:DeprecationWarning:sphinx.builders[.*]