DOC: Update TESTS.rst to use the correct names
DOC: Update TESTS.rst to use the correct names

Not actually sure that setup_module() is what was wanted here, but
it works?
Mention a bit more about actual pytest fixtures.

charris/numpy,numpy/numpy,mattip/numpy,mattip/numpy,charris/numpy,mattip/numpy,mattip/numpy,charris/numpy,numpy/numpy,numpy/numpy,charris/numpy,numpy/numpy