DOC: Fixes in tutorial (#7579)
DOC: Fixes in tutorial (#7579)

* DOC: Fixes in tutorial

Fixes a typo and corrects the transformation from
milli-meters to meters.

* DOC: Use different approach to scaling

I think this is easier now? :)
kingjr/mne-python,drammock/mne-python,Teekuningas/mne-python,mne-tools/mne-python,rkmaddox/mne-python,pravsripad/mne-python,bloyl/mne-python,kingjr/mne-python,wmvanvliet/mne-python,larsoner/mne-python,olafhauk/mne-python,kingjr/mne-python,mne-tools/mne-python,larsoner/mne-python,pravsripad/mne-python,wmvanvliet/mne-python,kambysese/mne-python,mne-tools/mne-python,wmvanvliet/mne-python,drammock/mne-python,olafhauk/mne-python,olafhauk/mne-python,Eric89GXL/mne-python,rkmaddox/mne-python,cjayb/mne-python,bloyl/mne-python,Eric89GXL/mne-python,drammock/mne-python,pravsripad/mne-python,cjayb/mne-python,Teekuningas/mne-python,larsoner/mne-python,Teekuningas/mne-python,kambysese/mne-python