Update setup.cfg

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: martin-springer

setup.cfg

@@ -26,4 +26,4 @@ addopts = --verbose
 # https://docs.python.org/3/library/warnings.html#the-warnings-filter
 filterwarnings =
     ignore:The .* module is currently experimental:UserWarning:rdtools
-    ignore:The \(fspath. py\.path\.local\) argument to IPyNbFile is deprecated
+    ignore:The \(fspath: py\.path\.local\) argument to IPyNbFile is deprecated