[EPL1104] Update methodnum summary annex

[Jimvy]

Currently it explains how to use MATLAB/Octave. But the course has moved on to use Python/Numpy.

+Probably someone should update this summary.

[Jimvy]

En plus ça cause des warnings car les fontes T1/lmss/m/sc (Latin Modern, graisse moyenne, small caps) n'existent pas...