Update neo/rawio/spikeglxrawio.py
Update neo/rawio/spikeglxrawio.py

Co-authored-by: Julia Sprenger <79f8c38ce67f626504cd0a3e95fcc4e4b55adf9c@rwth-aachen.de>
INM-6/python-neo,NeuralEnsemble/python-neo,JuliaSprenger/python-neo,apdavison/python-neo,samuelgarcia/python-neo