pytestCheckHook: add support for disabling arbitrary paths

Renames `disabledTestFiles` to the more genereric `disabledTestPaths` to
reflect that change.

doc/languages-frameworks/python.section.md

@@ -611,7 +611,7 @@ Using the example above, the analagous pytestCheckHook usage would be:
     "update"
   ];
 
-  disabledTestFiles = [
+  disabledTestPaths = [
     "tests/test_failing.py"
   ];
 ```