readme : remove invalid flag from Python example (#2396)

readme : remove invalid flag from Python example (#2396)

* Update README.md

Fix broken C-style API link

* Update whisper_processor.py

Update examples/python/whisper_processor.py to remove nonexistent flag "-np" from subprocess.Popen call.

* Add pywhispercpp to the Pybind11 Python wrapper list

abdeladim-s/pywhispercpp wasn't added to the list / was removed at some point (?)

It was referenced in issue #9, so I feel like it's worthy of being added as it's the first if not one of the first Python wrappers for whisper.cpp