Improve documentation of test_numpy_func3.py
Improve documentation of test_numpy_func3.py

* It was done to avoir use of tolist but invalide instruction still exists

pbrunet/pythran,serge-sans-paille/pythran,pbrunet/pythran,pombredanne/pythran,pombredanne/pythran,hainm/pythran,pombredanne/pythran,artas360/pythran,hainm/pythran,serge-sans-paille/pythran,artas360/pythran,pbrunet/pythran,artas360/pythran,hainm/pythran