Today I spotted one error that suspicious could have spotted:

    -both ``Callable``s no longer validate their ``argtypes``, in 
    +both ``Callable``\ s no longer validate their ``argtypes``, in 

I'm fixing it in https://github.com/python/cpython/pull/23800 

`make suspicious` found it as:

    [whatsnew/changelog:23] "`" found in "Callable``s no longer validate their ``argtypes"

So I'll doodle around this to see if tools/rstlint.py or Sphinx itself can see the error.