docs: remove outdated known limitation. (#5263)

* Fix typo.

* Remove outdated known limitation.

See #5179.

docs/limitations.rst

@@ -50,10 +50,6 @@ clean, well written patch would likely be accepted to solve them.
   One consequence is that containers of ``char *`` are currently not supported.
   `#2245 <https://github.com/pybind/pybind11/issues/2245>`_
 
-- The ``cpptest`` does not run on Windows with Python 3.8 or newer, due to DLL
-  loader changes. User code that is correctly installed should not be affected.
-  `#2560 <https://github.com/pybind/pybind11/issue/2560>`_
-
 Python 3.9.0 warning
 ^^^^^^^^^^^^^^^^^^^^